Published by Proceedings of the California Academy of Sciences, 4th series, vol. V, no. 6, 1915, pp. 163-193 + plates 16-19., 1915
Seller: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condition: Good. ORIGINAL PUBLICATION; Softcovers; ex-library; rear wrap separated (but present); small portion of paper covering perished at head and tail of spine; edges of wraps w/ small chips/nicks; contents in good condition w/ most pages unopened.