TY  - BOOK
AU  - Sissors, Jack Z.
TI  - Soils of the humid tropics / 
SN  - 0309019486
U1  - 631.4613 21
PY  - 1972///
CY  - Washington:  
PB  - National Academy
KW  - LEMB
KW  - AGRICULTURA
KW  - SUELOS
KW  - FISICA AGRICOLA
ER  -