Heliothis/Helicoverpa workshop : revised national suppression action plan : ARS-wide working conference, San Antonio, Texas, September 16-19, 1991
[Beltsville, Md.?], U.S. Dept. of Agriculture, Agricultural Research Service, 1992
1992
U.S. Department of Agriculture, National Agricultural Library
U.S. Department of Agriculture, National Agricultural Library
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