Principles of field crop production
Martin, John H. 1893-
Principles of field crop production [by] John H. Martin [and] Warren H. Leonard. - New York : Macmillan, 1964. - ix, 1176 p. : illus., maps. ; 24 cm.
Includes bibliographies and indexes
67016360
Field crops--United States.
SB187.U6 / M3 1967
633 / MAP 1967
Principles of field crop production [by] John H. Martin [and] Warren H. Leonard. - New York : Macmillan, 1964. - ix, 1176 p. : illus., maps. ; 24 cm.
Includes bibliographies and indexes
67016360
Field crops--United States.
SB187.U6 / M3 1967
633 / MAP 1967