Author: Gilson, H. C. (ed.)
Title: The Percy Sladen Trust Expedition to Lake Titicaca in 1937 under the leadership of Mr. H. Cary Gilson, M.A.. Reports 1-6, VII-XII, XIII-XX. [Complete].
Description: London, The Linnean Society of London, 1939-1955. 20 papers in three [PARTLY IN REPRINT]. Large 4to (31.4 x 25.0 cm). 357 pp., numerous plates and text illustrations. Original uniform printed wrappers. = The complete reports on the expedition (by the editor), the geology (by H. P. Moon), the algae, and the zoology, including the Amphibia (by H. W. Parker), and the freshwater molluscs (by Fritz Haas; with 28 fine drawings, and including several new genera and species; and by Hubendick on the gastropod anatomy with 94 figures). Uncut. Some soiiling, fraying and chipping to wrapper edges; the third part is a later reprint with trimmed edges (29.6 x 21.3 cm), otherwise a very good, clean set. Especially the much later published third volume is quite uncommon.

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