Editore: Published by The Committee on Desert and Arid Zones Research, University of Arizona,, Tucson, AZ, 1958
Da: Sabino Books, Oro Valley, AZ, U.S.A.
Wrappers. Condizione: Very Good. Wrappers. Condition: Very Good. Printed wrappers, Very good. 70 pp.
PAPERBACK. Condizione: cover wear otherwise good+. First edition. 84pp b/w illustrations 8vo paperback. Program in Geochronology Contribution #6.