Plant breeding. By Willet M. Hays.
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TextSeries: U. S. Dept. of agriculture. Division of vegetable physiology and pathology. Bulletin ; no. 29Publication details: Washington, Govt. print. off., 1901.Description: 72 p. illus., VI pl. 23 cmSubject(s): LOC classification: - SB623 .A2 no. 29
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