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Special Publication No. 6, Subject: Nematoda and Nematode Diseases, Part 2: Supergenera, Genera, Species, and Subspecies: C-E.
(United States Government Printing Office, 1983-07)
Special Publication No. 6, Subject: Nematoda and Nematode Diseases, Part 1: Supergenera, Genera, Species, and Subspecies: A-B
(United States Government Printing Office, 1981)