@book{b1d2dd9e30fd45b79fedba5305a0e129,
title = "The sulphur requirements of plants as evidenced by the sulphur - nitrogen ratio in the organic matter : a review of published data",
keywords = "assimilatie, chlorose, stikstof, voedingsstoffentekorten, zwavel, assimilation, chlorosis, nitrogen, nutrient deficiencies, sulfur",
author = "W. Dijkshoorn and {van Wijk}, A.L.",
note = "Overdr. Plant and soil, 26(1967)129-157",
year = "1967",
language = "English",
series = "Mededeling / Instituut voor biologisch en scheikundig onderzoek van landbouwgewassen",
number = "no. 329",
}