Editore: XIX Congres Geologique International, 1952, 195 pp., 1952
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condizione: Very Good. ORIGINAL PUBLICATION; Softcovers; wraps separated from text (but present) w/ small portions of paper covering at head and tail of spine perished; minor shelfwear w/ light creasing of corners of pages; contents very good with edges unopened.