Ruthenberg, Hans
Farming systems in the teopics - 2nd ed. - Oxford: Oxford University Press, 1976. - xviii, 366p.
Includes index and bibliography
eng
0198594585
Agriculture-Tropics
630.913 / RUF
Farming systems in the teopics - 2nd ed. - Oxford: Oxford University Press, 1976. - xviii, 366p.
Includes index and bibliography
eng
0198594585
Agriculture-Tropics
630.913 / RUF