Potassium in soil. 1972 : proceedings of the 9th colloquium of the International Potash Institute held in Landshut/ Fedral Republic of Germany

International Potash Institute

Potassium in soil. 1972 : proceedings of the 9th colloquium of the International Potash Institute held in Landshut/ Fedral Republic of Germany - Berne International Potash Institute 1972 - 220 p.; 23cm.
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