@article {,
title = {The Obsidian Mines of Hidalgo, Mexico},
journal = {American anthropologist},
volume = {2},
year = {1900},
note = {Pachuca source, "Sierra de las Navajas".sketches of some pits and the polyhedral cores from blade production},
pages = {405-416},
publisher = {New York, 1900},
keywords = {Mexico--Archaeology, Mexico--Archaeology--Hidalgo, Mexico--Archaeology--Obsidian, Mexico--Archaeology--Quarries},
author = {Holmes, William Henry}
}