'The conservation of the fertility of soil', Harpers
Tags: 1910s; 1913; 1913-3-1; Agricultural chemistry; Agriculture; Applied Chemistry; Chemistry; Effect of nitrogen on; England; England); Experimentation; Hall, A. D.; Harpenden; History; Nitrogen in agriculture; Plants; Rothamsted Experimental Station (Harpenden; Soil conservation; United States
atom, dcmes-xml, json, omeka-xml, rss2