Metrical analysis of paleo-indian flake technologies : Grant no. 3481 - Penrose Fund (1963). - Philadelphia, PA. enthält: Rezension zu: The Bering Land Bridge / ed. by David M. Hopkins. - Manuskript o. Pag - Wilmsen, Edwin N. (American Philosophical Society <Philadelphia-PA> : year book ; 1965, S. 646-648, 1965)