Proceedings of colloquium of the International Potash Institue
Proceedings of colloquium of the International Potash Institue Development of K-fertilizer recommendations :Proceedings - Bern, Switzerland International Potash Institute 1990 - 406 p. ill., maps 23 cm.
98161659
Potassium fertilizers
K-fertilizer development
S645 / .I5 1990
631.83(063) / I61P