Abstract
Journal Article Commercial Fertilizers, Their Sources and Use Get access Commercial Fertilizers, Their Sources and Use. By Gilbeart H. Collings. Published by the Blakiston Company, Philadelphia-Toronto, 1947. Fourth Edition, 6½ × 9¼ inches, 522 pages, 160 illustrations, 139 tables. Price $4.50. John O Hardesty John O Hardesty Search for other works by this author on: Oxford Academic Google Scholar Journal of Association of Official Agricultural Chemists, Volume 31, Issue 1, 1 February 1948, Page 165, https://doi.org/10.1093/jaoac/31.1.165 Published: 11 February 2020
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