Hughes .:. Diachronic Variability Hughes, Richard E., Diachronic Variability in Obsidian Procurement Patterns in Northeastern California and Southcentral Oregon. Berkeley et al.: University of California Press, 1969. xxii, 429 pages. Paperback. 4to. 846 g* University of California Publications in Anthropology, Vol. 17. - Gebrauchsspuren. ISBN 0-520-09699-1 | Hughes | Nordamerika | Geologie | Petrographie | Mineralogie | Obsidian | Kristallographie | Archaeologie Buchnummer 141014 CHF 30.00 | EUR 32.70