TY - THES T1 - An ecological model of trade: Prehistoric economic change in the northern Rio Grande region of New Mexico T2 - Anthropology Y1 - 1977 A1 - Gordon Bronitsky JF - Anthropology PB - University of Arizona VL - PhD UR - http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=759276391&sid=29&Fmt=1&clientId=43922&RQT=309&VName=PQD ER -