Editore: Florida Geological Survey, 1960, 15 Pp., 1960
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condizione: Good. Softcovers; ex-corporate library; minor shelfwear w/ light creasing of corners of wraps and leaves; tape covering of spine split, w/ portion perished; o/w in good condition.
Editore: Florida Geological Survey, 1961, 16 PP., 1961
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft Cover. Condizione: Good. Softcovers; ex-corporate library; minor shelfwear w/ light creasing of corners of wraps and leaves; tape covering of spine w/ small split; split, small ink stains on front wrap; o/w in good condition.