Editore: Fisher, Knight and Company, Ltd., 1964
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft cover. Condizione: Very Good. ORIGINAL Reprint/Offprint of journal article; softcovers; in very good condition. Journal.
Editore: Geol Soc Amer Bull, 1969
Da: Larry W Price Books, Portland, OR, U.S.A.
Rivista / Giornale
Pamphlet. Condizione: Very Good. Vol 80, pp. 1565-1576, Illus, Extracted from orig vol, thus begins with title page, trimmed & stapled pamphlet, else VG.