Technical and economic causes of productivity changes in U. S. wheat production, 1948-76
BOND, J. J
Technical and economic causes of productivity changes in U. S. wheat production, 1948-76 - Washington 1979 - 102p - U. S. D. A. Technical bulletin, no. 1598 .
WHEAT -- U. S
WHEAT -- U. S
338.163 11 B68T
Technical and economic causes of productivity changes in U. S. wheat production, 1948-76 - Washington 1979 - 102p - U. S. D. A. Technical bulletin, no. 1598 .
WHEAT -- U. S
WHEAT -- U. S
338.163 11 B68T