Determinations of nitrogen in the soils of some of the experimental fields at Rothamsted [microform] : and the bearing of the results on the question of the sources of the nitrogen of our crops
"Read in the Chemical Section, at the Meeting of the American Association for the Advancement of Science, held at Montreal, in August, 1882." "[Reprinted, with corrections ... Government Department of Agriculture, Washington.]" Tables Filmed from a copy of the original publication held by the McLennan Library, McGill University 43
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