TY  - BOOK
AU  - Kanwar, J S (Ed. and Comp.)
ED  - Indian Council of Agricultural Research (New Delhi)
TI  - Soil fertility: theory and practice
U1  - 631.45 21st
PY  - 1976///
CY  - New Delhi
PB  - ICAR
KW  - Soil fertility; Humus; Soil degradation; Land degradation; Pollution
ER  -