Kipps, Michael Smith, 1900- Production of field crops : a textbook of agronomy / [by] M. S. Kipps. - 6th ed. - New York : McGraw-Hill, [1970] - x, 790 p. : ill., maps. ; 23 cm. - McGraw-Hill publications in the agricultural sciences . Fifth ed. by T. K. Wolfe and M. S. Kipps. Includes bibliographical references. Subjects--Topical Terms: Field crops.Agronomy--United States. LC Class. No.: SB185 / .K56 1970