Control of cyclamen and broad mites on Gerbera / by Floyd F. Smith.
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TextSeries: Circular (United States. Department of Agriculture) ; no. 516.Publication details: Washington, D.C. : U.S. Dept. of Agriculture, 1939.Description: 15 p. : ill. ; 24 cmSubject(s): LOC classification: - SB608.G4 S8
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Cover title.
Contribution from Bureau of Entomology and Plant Quarantine.
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