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1889
On the present position of the question of the sources of the nitrogen of vegetation, with some new results, and preliminary notice of new lines of investigation
History of a field newly laid down to permanent grass
Results of experiments at Rothamsted, the growth of leguminous crops, for many years in succession on the same land; being (with additions) a lecture delivered November, 1, 1889, at the Royal Agricultural College, Cirencester