High-lights of the year in plant science
Kellerman, Karl F. 1879-1934
United States. Bureau of Plant Industry.
[United States] :[Bureau of Plant Industry],December 26, 1929
"A radio talk by Dr. Karl F. Kellerman, Associate Chief of the Bureau of Plant Industry, delivered through Station WRC and 32 other stations associated with the National Broadcasting Company, December 26, 1929."
Disease and pest resistance
NAL: 1.9 P69Ra 1929 Dec. 26
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