The clover and alfalfa seed chalcis-fly /
Theodore D. Urbahns.

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Main Author
Urbahns, T. D. (Theodore Dietrich), 1880-
Language(s)
English
Published
Washington, D.C. : U.S. Dept. of Agriculture, 1920.
Subjects
Alfalfa > Diseases and pests
Clover > Diseases and pests
Chalcid wasps
Note
"Professional paper."
Caption title.
"May 31, 1920."
Physical Description
20 p., 8 p. of plates : ill. ; 23 cm.
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