Editore: USGS Bulletin 1085-D, 1962, pp. v + 105-188 + folded map in rear pocket., 1962
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condizione: Good. ORIGINAL PUBLICATION; Softcovers; ex-libray; light creasing of fore-edge of front wrap; o/w in good condition.