Japanese Potassium Symposium
Nine papers read at the First Japanese Congress, Tokyo, 1957. Pp. 137. (Berne : International Potash Institute, 1959.) n.p.
Potassium Symposium, 1958
Twelve papers read at the Fifth Congress of the International Potash Institute (4 Sessions), Madrid, 1958. Pp. 426. (Berne : International Potash Institute, 1959.) n.p.
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ARNOLD, P. Potash in Wet and Dry Soils. Nature 187, 976 (1960). https://doi.org/10.1038/187976a0
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DOI: https://doi.org/10.1038/187976a0