Editore: United States Government Printing Office., 1967
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft cover. Condizione: Good. ORIGINAL 1967 PUBLICATION; ex-library; light creasing of corners of wraps and leaves; lower edge of front cover scuffed; o/w in good condition. Book.
Editore: United States Geological Survey, Washington D.C., 1967
Da: Clausen Books, RMABA, Colorado Springs, CO, U.S.A.
Wraps. Condizione: Very Good. Photos, Maps (illustratore). Edges and corners lightly rubbed and shelf-worn; 54p.; clean and tight. Size: 4to - 9 3/4" - 12" Tall. Paperback.