TY  - BOOK
AU  - Lal, Rattan
TI  - Soil physical properties and crop production in the tropics
U1  - 631.43 
PY  - 1979///
CY  - Chichester, England
PB  - Wiley
KW  - Suelos tropicales
KW  - Suelos y cultivos
KW  - Suelos
KW  - Física de
ER  -