Verlag: Bulletin of the Geological Institution of the University of Upsala, Vol. VIII (for 1906-1907), 1908, pp. 184-189., 1908
Anbieter: Eryops Books, Stephenville, TX, USA
Disbound from Journal; no covers; last page in xerox; minor shelfwear w/ light creasing of corners of leaves; o/w in good condition.