TY  - BK
ED  - The Sulphur Institute
TI  - Crops in Asia need sulphur
PY  - 1987///
CY  - Washington, DC (USA)
PB  - Sulphur Institute, 
KW  - Asia
KW  - Crops
KW  - AGROVOC
KW  - Npk fertilizers
KW  - Sulphur
ER  -