TY  - GEN
AU  - International Potash Institute
TI  - Symposium: Potassium potasio kalium 
U1  - 631.8 
PY  - 1956///
CY  - Switzerland
PB  - International potash institute
KW  - POTASIO
KW  - POTASSIUM
KW  - KALIUM
ER  -