Contours of Change : The yearbook of Agriculture 1970 /
Contours of Change : The yearbook of Agriculture 1970 /
United States department of Agriculture
- Washington : United States Department of Agriculture, c1970.
- xL, 366 p. : ill.
Includes index
--Agriculture--Year book
S21.A35 / .Y4 1970
Includes index
--Agriculture--Year book
S21.A35 / .Y4 1970
