Publicado por USGS Prof. Pap. 512, 1966, 78 pages + plates and maps in pocket., 1966
Librería: Eryops Books, Stephenville, TX, Estados Unidos de America
Soft Cover. Condición: Good. ORIGIONAL 1966 PUBLICATION; Softcover, in slipcase w/ maps, x-sections, etc. in adjoining pocket. Splits along hinges of slip case, corners bumped w/ a couple of dents along fore-edge of slip case, 1 pocket w/ small slit at top. o/w contents in good condition.