American agriculture, 1899-1939
Barger, Harold and Landsberg, H. H.
American agriculture, 1899-1939 a study of output, employment and productivity - New York NBER 1942 - xxii, 440p.
338.10973 / B251.AA
American agriculture, 1899-1939 a study of output, employment and productivity - New York NBER 1942 - xxii, 440p.
338.10973 / B251.AA
