TY  - BOOK
AU  - Sangatanan,Pedro D.
AU  - Sangatanan,Rone L.
TI  - Soil management
SN  - 971-23-0581-3
AV  - S 591 Sa581 1990
PY  - 1990///]
CY  - Manila
PB  - Rex Book Store
KW  - Soil science
N1  - Includes bibliographical references
ER  -