Answers are grounded in this paper and cite their sources.
Journal Article Plant Growth-Substances Get access Plant Growth-Substances. By Hugh Nicol , 108 pp. Distributed by Chemical Publishing Company of New York. 1938. Price $2.00. John W Mitchell John W Mitchell Search for other works by this author on: Oxford Academic Google Scholar Journal of Association of Official Agricultural Chemists, Volume 22, Issue 2, 1 May 1939, Page 460, https://doi.org/10.1093/jaoac/22.2.460 Published: 18 February 2020
No takes yet. Share an insight, caveat, or question.
John W. Mitchell (1939) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: