TY  - BOOK
AU  - DR E ZEHLER
TI  - POTASSIUM SULPHATE AND POTT=ASSIUM CHLORIDE
U1  - P631.83Z32P 
PY  - 1981///
CY  - SWITZERLAND
PB  - INTERNATIONAL POTASH INSTITUTE
KW  - POTASSIUM SULPHATE AND POTT=ASSIUM CHLORIDE
N1  - GIFT
ER  -