TY  - BOOK
AU  - International Colloquium on Nutrient Balances and the Need for Fertilizers in Semi-Arid Regions, 17th Morocco, 1983.
TI  - Nutrient balances and the need for fertilizers in semi-arid regions; proceedings
U1  - 631.816(100) 1983 (082.2) M3 
PY  - 1983///
CY  - Bern
PB  - IPI
KW  - Plant nutrition,Fertilizer application
ER  -