TY  - BK
AU  - Ruthenberg,H.
AU  - Collinson,M.P.
AU  - MacArthur,J.D.
AU  - Zandstra,H.D.
TI  - Farming systems in the tropics
SN  - 0-19-859482-8
U1  - 631.50913 
PY  - 1980///
CY  - Oxford (United Kingdom)
PB  - Clarendon Press, 
KW  - Arable soils
KW  - Cropping patterns
KW  - Fallow systems
KW  - Irrigation
KW  - AGROVOC
KW  - Perennial
KW  - Shifting cultivation
KW  - Tropical zones
KW  - Upland soils
KW  - Farming systems
N1  - Illustrations, tables, graphs, appendices p. 390-396, bibliography p. 397-414, index p. 415-424
ER  -