Numerical list of current publications of the United States department of agriculture
Zimmerman, F.L., Read, P.R.
Numerical list of current publications of the United States department of agriculture - Washington 1941 - 1-929 p. - United States Department of Agriculture. Miscellaneous Publication No. 450 .
Numerical list of current publications of the United States department of agriculture - Washington 1941 - 1-929 p. - United States Department of Agriculture. Miscellaneous Publication No. 450 .