Editore: Copeia, 1966, No. 3, Pp. 498-505., 1966
Da: Eryops Books, Stephenville, TX, U.S.A.
Reprint/offprint of journal article; ex-museum library; minor shelfwear; o/w in good condition.
Editore: University of Colorado Studies, Series in Biology No. 20, 1965, Pp. 1-8., 1965
Da: Eryops Books, Stephenville, TX, U.S.A.
Reprint/offprint of journal article; ex-museum library; no covers issued; in ver good condition.
Editore: University of Colorado Studies, Series in Biology No. 19, 1965, 8 Pp., 1965
Da: Eryops Books, Stephenville, TX, U.S.A.
Reprint/offprint of journal article; ex-museum library; no wraps issued; in very good condition.