TY  - BOOK
AU  - 
ED  - International Potash Institute.
TI  - Potassium Workshop
PY  - 1979///
CY  - Worblaufen-Bern, Switzerland
PB  - International Potash Institute
KW  - Potassium fertilizers
KW  - Soils
KW  - Crops
KW  - Potassium content
ER  -