TY  - BOOK
AU  - Ruthenberg, Hans.
TI  - Farming systems in the tropics
SN  - 0198594267
U1  - 630.913 19
PY  - 1971///
CY  - Oxford [Eng.]
PB  - Clarendon Press
KW  - Agricultural systems
KW  - Tropics
KW  - Farm management
N1  - Includes bibliographical references (p. [397]-414)
ER  -