TY  - BOOK
TI  - Farming systems of the world,
SN  - 0701113618
AV  - S439 .D97 1970
PY  - 1970///.
CY  - London
PB  - Chatto & Windus
KW  - Agricultural systems
KW  - Syst?emes agricoles
KW  - Agricultura (Aspectos Economicos)
KW  - larpcal
KW  - Agriculture
KW  - Economic aspects
N1  - Includes bibliographical references.
ER  -