Leonard, Warren H., 1900- Field crops in Colorado, by Warren H. Leonard [and] Robert S. Whitney. - [Rev. ed.] - Minneapolis, Burgess Pub. Co. [1950] - ii l., 322 p. illus., maps (part col.) 29 cm. "References" at end of each chapter. LCCN: agr50000059 Subjects--Topical Terms: Field crops--Colorado. LC Class. No.: S507.C6 / L4 1950