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Description: |
xii, 75 pages : illustrations, tables, figures ; 28 cm |
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Bibliography Note: |
"Literature cited: " pages 46-47 |
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Funding Info. Note: |
Sponsored by the U.S. Department of Agriculture and the New York State College of Agricultural and Life Sciences at Cornell University. USDA/APHIS contract number 53-6395-8-122 and Hatch Project NYC 147303. |