Editore: State Geological Survey of Kansas, 1964
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft cover. Condizione: Good. ORIGINAL 1964 PUBLICATION; softcover; this is NOT ex-library; includes the large folded plate in rear pocket (COMPLETE for this publication); light foxing of covers and endpages; otherwise in good condition. Journal.