Editore: USGS Bulletin 1122-C, 1962, 39 pp. + 4 maps/sections in pocket., 1962
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condizione: Good. ORIGINAL PUBLICATION; Softcovers; ex-library; minor shelfwear w/ small creases at corners of wraps and pages; very small chips on fore-edge of last 2 leaves; light foxing of rear (blank) endpage and edges; o/w in good condition.