TY  - BOOK
AU  - Nye, Peter Hague.
AU  - Greenland, D. J.
TI  - The soil under shifting cultivation
U1  - 631.5 
PY  - 1960///
CY  - Bucks
PB  - Commonwealth Agricultural Bureaux
KW  - Roza
KW  - Sistemas de cultivo
ER  -