Weidhaas D E, Gratz Norman G.
1982.
Lice.
Chronicle of the World Health Organization. 82.858:1-10.
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Gratz Norman G.
1973.
Louse powders: Problems in field programs.
Proceedings of the International Symposium on the control of lice and louse-borne diseases. 263:180-181.
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Weidhaas D E, Coles M M, Gratz Norman G, Makara George, Traub Robert, Smith Carrol N.
1973.
Open discussion.
Proceedings of the International Symposium on the control of lice and louse-borne diseases. 263:188.
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Gratz Norman G.
1973.
The current status of louse infestations throughout the world.
The control of lice and louse-bourne diseases, Scientific Publication No. 265. :23-31.
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Gratz Norman G, Horwitz Abraham.
1973.
The current status of louse infestations throughout the world.
Proceedings of the International Symposium on the control of lice and louse-borne diseases. 263:23-31.
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