@article {, title = {The Archeology of Trade}, journal = {Dialectical Anthropology}, volume = {1}, number = {1}, year = {1975}, pages = {43-50}, url = {http://springerlink.metapress.com/openurl.asp?genre=article\&id=doi:10.1007/BF00244567 }, author = {Kohl, Philip L.} }