Editore: Episodes, vol. 7, no. 2, 1984, pp. 26-28., 1984
Da: Eryops Books, Stephenville, TX, U.S.A.
Reprint; no covers; minor shelfwear w/ light creasing of leaves; o/w in good condition.
Editore: Geological Association of Canada Spec. Pap. 27, 1984, pp. 99-112., 1984
Da: Eryops Books, Stephenville, TX, U.S.A.
Reprint; no covers; in good condition.
Editore: Memoria III, Congreso Latinamericano de Paleontogia, 1984, pp. 192-199., 1984
Da: Eryops Books, Stephenville, TX, U.S.A.
Reprint; no covers; minor shelfwear; o/w in good condition.