TY  - BOOK
AU  - Zehler, E.
AU  - Gething, P.A.
AU  - Kreipe, H.
TI  - Potassium sulphate and potassium chloride : their influence on the yield and quality of cultivated plants
T2  - (IPI research topics; no. 9)
PY  - 1981///
CY  - Berne
PB  - International Potash Institute
ER  -