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Aphids on leafy vegetables
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About the author
born 1902
0 ratings · 8 works
Editions
Slightly rev. Oct. 1971.
U.S. Dept. of Agriculture
1971
Rev. May 1977.
Dept. of Agriculture, Agricultural Research Service, for sale by the Supt. of Docs., U.S. Govt. Print. Off.
1977
Slightly rev.
For sale by the Supt. of Docs., U.S. Govt. Print. Off.
1969
