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
Philadelphia: WPA, 1937. Paperback. xv, 48p., wraps, illus., graphs, ex library with rubberstamp on front wrap, else very good condition. Works Progress Administration. Studies of changing techniques and employment in agriculture, report no. A-1. More
Cat.No: 40802