Partial history of the development of grain threshing implements and machines
By: compiled by Lillian Church, slightly revised by E. M. Dieffenbach.
Series: Information series -- no. 73.
Publisher: U.S. Dept. of Agriculture, Bureau of Plant Industry, Soils and Agricultural Engineering
Published: 1949
Place of publication: Beltsville, Md
Language: eng
Number of pages: 40
Subjects: Agricultural machinery -- History.; Threshing machines -- History.
Notes: Caption title.

Bibliography: p. 39-40.