Changes in technology and labor requirements in crop production: wheat and oats
Philadelphia: WPA, 1939. Paperback. xv, 182p., wraps, front., illus. Works Progress Administration, National Research Project, report no. A-10. More
Cat.No: 40800
Philadelphia: WPA, 1939. Paperback. xv, 182p., wraps, front., illus. Works Progress Administration, National Research Project, report no. A-10. More
Cat.No: 40800