Alternative agriculture : a view from Brussels \ Crop protection in organic and low input agriculture : options for reducing agrochemical usage : proceedings of a symposium organised by the British Crop Protection Council, held at Churchill College, Cambridge, UK 4th - 6th September, 1990 [Hoofdstuk uit boek]
The effect of previous P additions on sorption indices of calcareous soils determined with commonly employed methods \ Zeitschrift für Pflanzenernährung und Bodenkunde = Journal of plant nutrition and soil science [Artikel]
Assimakopoulos, I. \ Kosmas, C. \ Nychas, A. \ 1986
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