Editore: Canada Geological Survey Economic Geology Series 3, 1926, 253 pp., 1926
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condizione: Good. ORIGINAL PUBLICATION; Softcovers; small splits in upper hinges; upper edge of endpages wrinkled and lightly foxed; light creasing of corners of pages; o/w in good condition.