TY  - BOOK
AU  - Weischet Wolfgang
AU  -  Caviedes Cesar N
TI  - Persisting ecological constraints of tropical agriculture
SN  - 0582056926
U1  - U672(JB):(G:5).192.N9, N3 
PY  - 1993///
CY  - Harlow
PB  - Longman Scientific & technical       
KW  - Agricultural Geography
N1  - Bib p. 292-313
ER  -