Editore: Unpublished MA Thesis, Department of Geology, University of Saskatchewan, 1961, 78 pp. + 23 plates + 2 folded cross-sections., 1961
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condizione: Very Good. Softcovers; ex-corporate library; comb-bound; text xeroxed, plates are photographic prints; minor shelfwear; o/w very good condition.