Leonard, Warren H. 1900- creator Whitney, Robert S. (Robert Shannon) 1912- joint author. text bibliography mnu Minneapolis Burgess Pub. Co. [1950] 1950 [Rev. ed.] monographic eng

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ii l., 322 p. illus., maps (part col.) 29 cm. by Warren H. Leonard [and] Robert S. Whitney. "References" at end of each chapter. Field crops Colorado S507.C6 L4 1950 agr50000059 U.S. Dept. of Agr. Libr. 820602 20260227111012.0 agr50000059