On the Origin of the Theory of Mineral Nutrition of Plants and the Law of the Minimum van der Ploeg, R. R. ; Bo¨hm, W. ; Kirkham, M. B. Abstract Publication: Soil Science Society of America Journal Pub Date: 1999 DOI: 10.2136/sssaj1999.6351055x Bibcode: 1999SSASJ..63.1055V