TY  - GEN
TI  - Potassium For agriculture : a situation analysis 
U1  - 631.83 
PY  - 1980///
CY  - Atlanta
PB  - Potash & phosphate institute
KW  - Potassium fertilizes
KW  - Fertilizers , soil conditioners, growth regulators
KW  - Specific techniques
ER  -