Editore: United States Government Printing Office., 1980
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft cover. Condizione: Very Good. ORIGINAL 1980 PUBLICATION; softcover; ex-corporate library; light creasing of corners of wraps and leaves, o/w in very good condition. Book.
Editore: South Dakota State Geological Survey Report of Investigations no. 56, 1947, Pp. 55-111., 1947
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condizione: Very Good. Softcovers; ex-corporate library; minor shelfwear; o/w in very good condition.
Editore: United States Government Printing Office., 1949
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft cover. Condizione: Good. ORIGINAL 1949 PUBLICATION; missing rear cover and pocket ( but the five folded plates are present, loosely-inserted; complete for this publication); ex-library; spine reinforced with tape; o/w in good condition. Book.
Editore: United States Geological Survey/USGS/Government Printing Office/GPO, Washington, DC, 1949
Da: Robert Gavora, Fine & Rare Books, ABAA, Talent, OR, U.S.A.
Soft cover. Condizione: Fine. 105 pages with tables, graphs, charts, bibliography and index. The required five folded plates are present in the rear pocket. Bound in original orange stiff paper covers with printing in black. Small name stamp to the front cover. A fine copy. Book.
Editore: GPO, Washington, D.C., 1964
Da: Hoffman Books, ABAA, IOBA, Columbus, OH, U.S.A.
Softcover. Condizione: Very Good. USGS 1964. Wrappers, very good condition . Complete with all maps and plates.