Yields of barley in the United States and Canada
Harlan, H.V., Cowan, P.R.
Yields of barley in the United States and Canada 1927-1931 - Washington 1935 - 1-80 p. - Yields, Barley United States Department of Agriculture. Technical Bulletin No. 446 .
Yields of barley in the United States and Canada 1927-1931 - Washington 1935 - 1-80 p. - Yields, Barley United States Department of Agriculture. Technical Bulletin No. 446 .