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Charles H. Porter and Richard C. Collins
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Specificity and Sensitivity of Skin Test Reactions to Extracts of Toxocara Canis and Ascaris Suum

II. Homologous 48-Hour Passive Cutaneous Anaphylaxis Tests with Sera from Infected Guinea Pigs

Richard F. Collins and Michael H. Ivey
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Charles H. Porter and Richard C. Collins
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Charles H. Porter and Richard C. Collins
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Charles H. Porter and Richard C. Collins
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Richard F. Collins and Michael H. Ivey
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Charles H. Porter and Richard C. Collins
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Richard H. Glew, William E. Collins, and Louis H. Miller
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Horacio Figueroa M., Richard C. Collins, and Wieslaw J. Kozek
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Onchocerciasis in Guatemala

Epidemiology in Fincas with Various Intensities of Infection

A. David Brandling-Bennett, John Anderson, Harald Fuglsang, and Richard Collins
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