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To Josef Popper 15 February 1881
Summary
Cannot help JP [with bird-powered flying machine].
Author: | Charles Robert Darwin |
Addressee: | Josef Popper (Josef Popper-Lynkeus) |
Date: | 15 Feb 1881 |
Classmark: | Smithsonian Libraries and Archives (Dibner Library of the History of Science and Technology MSS 405 A. Gift of the Burndy Library) |
Letter no: | DCP-LETT-13054 |