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"Theory of Color of Organic Substances" Page 1. June 26, 1939
"Theory of Color of Organic Substances" June 26, 1939. Page 1  Larger Images / More Information. 10 pp.

Activity Listings

  • Letter from LP to H. C. Blackmeyer RE: LP has no suggestions and would not have any use for the educational material mentioned in his letter of June 12, 1939. [Blackmeyer's letter July 25, 1939] [Filed under LP Correspondence: Box #37, Folder #37.6]