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Potassium symposium : 12 papers read at the Fourth Congress of the International Potash Institute (4 sessions), Madrid 1958.

Potassium symposium : 12 papers read at the Fourth Congress of the International Potash Institute (4 sessions), Madrid 1958. - Berne : The Institute, 1958. - 426 p. : ill.

English, German, Spanish & French text.


Potassium fertilizers.
Soils--Potassium content.