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The subfamily Leeuwenhoekinae in the neotropics (Acarina: Trombiculidae)
Vol 20, Page 1, Date 1975
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A list of venezuela chiggers, particularly of small mammalian hosts (Acarina: Trombiculidae)
Vol 20, Page 45, Date 1972
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Venezuela Macronyssidae (Acarina: Mesostigmata)
Vol 20, Page 75, Date 1975
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Systematics of neotropical Hirstionyssus mites with special emphasis with special emphasis on Venezuela (Acarina: Mesostigmata)
Vol 20, Page 93, Date 1975
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The streblid batflies of Venezuela (Diptera: Streblidae)
Vol 20, Page 1, Date 1975
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Mammals of the Smithsonian Venezuelan Project
Vol 20, Page 1, Date 1976