Genera of freshwater nematodes (Nematoda) of eastern North America
By: by V. R. Ferris, J. M. Ferris [and] J. P. Tjepkema, for the Environmental Protection Agency.
Contributors: Ferris, John Mason, 1927- joint author; Tjepkema, J. P., joint author.
Series: Biota of freshwater ecosystems identification manual; 10; Water pollution control research series.
Publisher: U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1973
Place of publication: [Washington
Language: eng
Number of pages: 38
Subjects: Freshwater nematodes -- North America -- Identification.
Notes: Bibliography: p. 33.
"Project no. 18050 ELD. Contract no. 14-12-894."