TY  - BK
ED  - Potash Phosphate Institute
TI  - Phosphorus for agriculture
PY  - 1990///
CY  - Atlanta, GA (USA)
PB  - PPI, 
KW  - Fertilizer application
KW  - Fertilizers
KW  - AGROVOC
KW  - Phosphate fertilizers
KW  - Phosphorus
KW  - Plant response
ER  -