title: Highly visible, curiously intangible.
authors: Department of Anthropology, Arizona State University, Tempe, AZ 85287-2402, USA. gaclark@asu.edu
authors: G A
authors: GA
authors: Clark
mesh_terms: D000349:Africa; D000818:Animals; D001106:Archaeology; D005075:Biological Evolution; D005060:Europe; D049690:History, Ancient; D015186:Hominidae; D006801:Humans; D008954:Models, Biological; D010163:Paleontology