Ice-Age Hunters of the Ukraine Richard G. Klein Popularity → Current 12 Peak 22 Niche 55 An interdisciplinary study of early man in the Ukraine during the Last glacial Period, a crucial interval in Human Evolution ACLS History E-Book Project 2008-11 164 pages
Man and Culture in the Late Pleistocene A Case Study Richard G. Klein Popularity → Current 10 Peak 18 Niche 48 Klein, Richard G. ACLS History E-Book Project 2008-11 296 pages