TY  - BOOK
TI  - Nutrient balances and the need for fertilizers in semi-arid and arid regions
U1  - 631.81(252)(063)  M3 
PY  - 1983///
CY  - Morocco
PB  - International Potash Institute
KW  - Colloquium of the International Potash Institute, 17th, Morocco
KW  - Nutrient Requirements,Fertilizer Recommendations
ER  -