Verlag: USGS Bulletins, 1910-1911, # 432 (62 pp.); 433 (234 pp. + maps); 434 (74 pp.); 435 (88 pp. + maps); 436 (82 pp.); 437 (59 pp.); 438 (73 pp. + maps); 439 (148 pp.)., 1911
Anbieter: Eryops Books, Stephenville, TX, USA
Hardcover. Hardcover; ex-library; eight bulletins (USGS Bulls. 432-439) bound together in blue library buckram; minor shelfwear and light tanning of pages; o/w all in very good condition.