Geologic map and descriptions of the Portage and Nunda quadrangles

including a map of Letchworth park, by John M. Clarke & D. Dana Luther. Accompanied by a report on the Pleistocene history of the Genesee valley, by Herman L. Fairchild.
Albany, New York State Education Department, 1908.
Physical description
88 p. plates (1 fold. col. in pocket) 4 fold. geol. maps (2 in pocket) 23 cm.
Bulletin of the New York State Museum ; no. 118.
Bulletin of the New York State Museum. Paleontology ; 18.
Librarian view | Catkey: 133695