Editore: Montana Bureau of Mines and Geology Information Circular No. 26, 1958, 45 Pp., 1958
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condizione: Very Good. Paper wrappers; staple-bound; ex-corporate library; minor shelfwear w/ light creasing of wraps and corners of leaves; o/w in very good condition.