@article {, title = {Study of obsidian exchange networks in Calabria}, journal = {World Archaeology}, volume = {11}, number = {1}, year = {1979}, note = {Source of data: Anthropological Literature, Harvard University0043-8243}, pages = {95-110}, publisher = {London}, keywords = {Italy--Archaeology--Commerce, Italy--Archaeology--Neolithic, Italy--Archaeology--Obsidian}, author = {Albert J. Ammerman} }