Published by Contributions from the Museum of Paleontology, University of Michigan, Vol. 15, No. 1, 1959, Pp. 1 - 13 + 2 Plates., 1959
Seller: Eryops Books, Stephenville, TX, U.S.A.
Offprint from journal; issued w/ front wrap only; minor shelfwear; o/w in good condition.