% pubman genre = article @article{item_1555207, title = {{Source provenance of obsidian artifacts from the Early Stone Age (ESA) site of Melka Konture, Ethiopia}}, author = {Negash, Agazi and Shackley, M. S. and Mulugeta, Alene}, language = {eng}, year = {2006}, date = {2006}, journal = {{Journal of Archaeological Science}}, volume = {33}, pages = {1647--1650}, }