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2005
Brown L, van der Linde T C, Fourie L J, Horak Ivan G.  2005.  Seasonal occurrence and production effects of the biting louse Damalinia limbata on Angora goats and 2 treatment options. Journal of the South African Veterinary Association. 76(2):74-78. Abstract
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2004
Durden Lance A, Horak Ivan G.  2004.  Linognathus weisseri n. sp. (Phthiraptera: Linognathidae) of impalas, Aepygeros melampus: description and biology. Onderstepoort Journal of Veterinary Research. 71(1):59-66. Abstract
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2003
Horak Ivan G, Gallivan G J, Braack L E O, Boomker J, De Vos V.  2003.  Parasites of domestic and wild animals in South Africa. XLI. Arthropod parasites of impalas (Aepyceros melampus) in the Kruger National Park. Onderstepoort Journal of Veterinary Research. 70:131-163.
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2001
Horak Ivan G, Macivor K M, Greeff C J.  2001.  Parasites of domestic and wild animals in South Africa. XXXIX. Helminth and arthropod parasites of Angora goats in the southern Karoo. Onderstepoort Journal of Veterinary Research. 68(1):27-35. Abstract
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2000
Bryson N R, Horak Ivan G, Hohn E W, Louw J P.  2000.  Ectoparasites of dogs belonging to people in resource-poor communities in North West Province, South Africa. Journal of the South African Veterinary Association. 71(3):175-179. Abstract
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Fourie L J, Horak Ivan G.  2000.  Status of dorper sheep as hosts of ectoparasites. Small Ruminant Research. 36(2):159-164. Abstract
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1999
Horak Ivan G, Chaparro F, Beaucournu Jean-Claude, Louw J P.  1999.  Parasites of domestic and wild animals in South Africa. XXXVI. Arthropod parasites of yellow mongooses, Cynictis penicillata (G. Cuvier, 1829). Onderstepoort Journal of Veterinary Research. 66(1):33-38. Abstract
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1998
Matthee Sonja, Horak Ivan G, Meltzer D G A.  1998.  The distribution and seasonal changes of louse populations on impala Aepyceros melampus. South African Journal of Wildlife Research. 28(1):22-25. Abstract
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1996
Boomker J, Horak Ivan G, Bothma J du P.  1996.  Ecto- and Endoparasites. Game ranch management. :522-534.
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Braack L E O, Horak Ivan G, Jordaan Leonora C, Segerman Joyce, Louw J P.  1996.  The comparative host status of red veld rats (Aethomys chrysophilus) and bushveld gerbils (Tatera leucogaster) for epifaunal arthropods in the southern Kruger National Park, South Africa. Onderstepoort Journal of Veterinary Research. 63(2):149-158. Abstract
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1995
Fourie L J, Dutoit J S, Kok D J, Horak Ivan G.  1995.  Arthropod parasites of elephant shrews, with particular reference to ticks. Mammal Review. 25(1-2):31-37. Abstract
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Horak Ivan G, De Vos V, Braack L E O.  1995.  Arthropod burdens of impalas in the Skukuza region during two droughts in the Kruger National Park. Koedoe. 38:65-71.
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Horak Ivan G, Fourie L J, van Zyl J M.  1995.  Arthropod parasites of impalas in the Kruger national park with particular reference to ticks. South African Journal of Wildlife Research. 25(4):123-126. Abstract
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Braack L E O, Maggs K A R, Zeller D A, Horak Ivan G.  1995.  Exotic arthropods in the Kruger National Park, South Africa: modes of entry and population status. African Entomology. 3:39-48.
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Louw J P, Horak Ivan G, Horak M L, Braack L E O.  1995.  Fleas, lice and mites on scrub hares (Lepus saxatilis) in northern and eastern Transvaal in Kwazulu-Natal, South Africa. Onderstepoort Journal of Veterinary Research. 62(2):133-137. Abstract
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Horak Ivan G, Boomker J, Flamand J R B.  1995.  Parasites of domestic and wild animals in South Africa. XXXIV. Arthropod parasites of nyalas in north-eastern KwaZulu-Natal. Onderstepoort Journal of Veterinary Research. 62(3):171-179. Abstract
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1994
Boomker J, Horak Ivan G, Ramsay K A.  1994.  Helminth and arthropod parasites of indigenous goats in the northern Transvaal. Onderstepoort Journal of Veterinary Research. 61:13-20.
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1993
Louw J P, Horak Ivan G, Braack L E O.  1993.  Fleas and lice on scrub hares (Lepus saxatilis) in South Africa. Onderstepoort Journal of Veterinary Research. 60(2):95-101. Abstract
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Louw J P, Horak Ivan G, Meyer S, Price Roger DeForrest.  1993.  Lice on helmeted guineafowls at five localties in South Africa. Onderstepoort Journal of Veterinary Research. 60:223-228. Abstract
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1992
Horak Ivan G, Anthonissen M, Krecek R C, Boomker J.  1992.  Arthropod Parasites of Springbok, Gemsbok, Kudus, Giraffes and Burchell and Hartmann Zebras in the Etosha and Hardap Nature- Reserves, Namibia. Onderstepoort Journal of Veterinary Research. 59(4):253-257. Abstract
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Horak Ivan G, Boomker J, Spickett A M, Devos V.  1992.  Parasites of domestic and wild animals in South Africa. XXX. Ectoparasites of kudus in the Eastern Transvaal Lowveld and the Eastern Cape Province. Onderstepoort Journal of Veterinary Research. 59(4):259-273. Abstract
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Visagie E J, Horak Ivan G, Boomker J.  1992.  The louse fly Lipoptena paradoxa Newstead, 1907 (Diptera, Hippoboscidae) - description of its adult and puparium and biology in South Africa. Onderstepoort Journal of Veterinary Research. 59(4):303-314. Abstract
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1991
Fourie L J, Vrahimis S, Horak Ivan G, Terblanche H J, Kok O B.  1991.  Ecto- and endoparasites of introduced gemsbok in the Orange Free State. South African Journal of Wildlife Research. 21(3):82-87. Abstract
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Horak Ivan G, Boomker J, Flamand J R B.  1991.  Ixodid ticks and lice Infesting red duikers and bushpigs in north-eastern Natal. Onderstepoort Journal of Veterinary Research. 58(4):281-284. Abstract
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Boomker J, Horak Ivan G, Booyse D G, Meyer Santa.  1991.  Parasites of South African wildlife. VIII. Helminth and arthropod parasites of warthogs, Phacochoerus aethiopicus, in the eastern Transvaal. Onderstepoort Journal of Veterinary Research. 58(3):195-202. Abstract
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Horak Ivan G, Knight M M, Williams E J.  1991.  Parasites of domestic and wild animals in South Africa. XXVIII. Helminth and arthropod parasites of angora goats and kids in valley bushveld. Onderstepoort Journal of Veterinary Research. 58(4):253-260. Abstract
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1990
Fivaz B H, Horak Ivan G, Williams E J.  1990.  Helminth and arthropod parasites of angora goats on irrigated Kikuyu grass pastures in the eastern Cape Province. Journal of the South African Veterinary Association. 61(3):112-116.
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Fourie L J, Horak Ivan G.  1990.  Parasites of cattle in the south western Orange Free State. Journal of the South African Veterinary Association. 61:27-28.
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1989
Horak Ivan G, Keep M E, Spickett A M, Boomker J.  1989.  Parasites of domestic and wild animals in South Africa. XXIV. Arthropod parasites of bushbuck and common duiker in the Weza State Forest, Natal. Onderstepoort Journal of Veterinary Research. 56:63-66.
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Horak Ivan G.  1989.  Studies on helminth and arthropod parasites of some domestic and wild animals in Southern Africa. DVSc thesi
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1988
Horak Ivan G, Keep M E, Flamand J R B, Boomker J.  1988.  Arthropod parasites of common reedbuck, Redunca arundinum, in Natal. Onderstepoort Journal of Veterinary Research. 55:19-22.
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Horak Ivan G, Boomker J, De Vos V, Potgieter F T.  1988.  Parasites of domestic and wild animals in South Africa. XXIII. Helminth and arthropod parasites of warthogs, Phacochoerus aethiopicus, in the eastern Transvaal Lowveld. Onderstepoort Journal of Veterinary Research. 55:145-152.
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1987
Horak Ivan G.  1987.  Arthropod parasites of some wild animals in South Africa and Namibia. Journal of the South African Veterinary Association. 58:207-211.
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Horak Ivan G.  1987.  Ectoparasites of mountain reedbuck. Pelea. 6:24-26.
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Horak Ivan G.  1987.  Parasites of very young goats from birth to one year of age. Angora Goat and Mohair Journal. 29:7-15.
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Fourie L J, Horak Ivan G, Visser Evelyn.  1987.  Quantitative and qualitative aspects of the parasite burdens of rock dassies (Procavia capensis Pallas, 1766) in the Mountain Zebra National Park. South African Journal of Zoology. 22:101-106.
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1986
Horak Ivan G.  1986.  Ectoparasites of the caracal. Pelea. 5:27-30.
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Horak Ivan G, Knight M M, De Vos V.  1986.  Parasites of domestic and wild animals in South Africa. XX. Arthropod parasites of the Cape mountain zebra (Equus zebra zebra). Onderstepoort Journal of Veterinary Research. 53:127-132.
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Horak Ivan G, Sheppey K, Knight M M, Beuthin C L.  1986.  Parasites of domestic and wild animals in South Africa. XXI. Arthropod parasites of vaal ribbok, bontebok and scrub hares in western Cape Province. Onderstepoort Journal of Veterinary Research. 53:187-197.
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1984
Horak Ivan G, Biggs H C, Reinecke R K.  1984.  Arthropod parasites of Hartmann's mountain sebra, Equus zebra hartmannae, in South West Africa/Namibia. Onderstepoort Journal of Veterinary Research. 51:183-187.
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Horak Ivan G, De Vos V, De Klerk B D.  1984.  Parasites of domestic and wild animals in South Africa. XVII. Arthropod parasites of Burchell's zebra, Equus burchelli, in the eastern Transvaal Lowveld. Onderstepoort Journal of Veterinary Research. 51:145-154.
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Horak Ivan G, Sheppey K.  1984.  The internal and external parasites of grey rhebuck. Pelea. 3:15-19.
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MacIvor K M De F, Horak Ivan G.  1984.  The internal and external parasites of angora and boer goats in Valley Bushveld near Uitenhage. Angora Goat and Mohair Journal. 26:7-14.
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1983
Horak Ivan G, Boomker J, Kingsley S A, De Vos V.  1983.  The efficacy of ivermectin against helminth and arthropod parasites of impala. Journal of the South African Veterinary Association. 54(4):251-253. Abstract
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Horak Ivan G.  1983.  Helminth, arthropod and protozoan parasites of mammals in African savannas. Ecosystems of the World. 13:563-581.
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Horak Ivan G, De Vos V, Brown Moira R.  1983.  Parasites of domestic and wild animals in South Africa. XVI. Helminth and arthropod parasites of blue and black wildebeest (Connochaetes taurinus and Connochaetes gnou). Onderstepoort Journal of Veterinary Research. 50:243-255.
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Horak Ivan G.  1983.  The internal and external parasites of kudu. Pelea. 2:22-26.
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Horak Ivan G, Biggs H C, Hanssen Tammy S, Hanssen Rose E.  1983.  The prevalence of helminth and arthropod parasites of warthog, Phacochoerus asthiopicus, in South West Africa/ Namibia. Onderstepoort Journal of Veterinary Research. 50(2):145-148.
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Horak Ivan G, Boomer S, Kingsley S A, Vos V de.  1983.  The efficacy of ivermectin against helminth and arthropod parasites of impala (Aepyceros melampus). Journal of the South African Veterinary Association. 54(4):251-253.
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1982
Horak Ivan G, Brown Moira R, Boomker J, De Vos V, Van Zyl Elsa A.  1982.  Helminth and arthropod parasites of blesbok, Damaliscus dorcas phillipsi and of bontebok, Damaliscus dorcas dorcas. Onderstepoort Journal of Veterinary Research. 49:139-146.
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