Hermann Strauss, with Herbert Tischner ; edited by G. Stürzenhofecker and A.J. Strathern ; [translated by Brian Shields]Dept. of Anthropology, University of Pittsburgh[1989]
G. Tourtellot ... [et al.] ; with an appendix by Michael P. Smyth. Archaeological investigations at Sayil, Yucatan, Mexico: intersite reconnaissance and soil studies during the 1987 field season / N.P. Dunning.Dept. of Anthropology, University of Pittsburgh, 1989.1989
translated and with an introd. by Keith BrownUniversity Center for International Studies in cooperation with the Dept. of Anthropology, University of Pittsburgh1979