@book {622, title = {Tree-Ring Dates from New Mexico B Chaco-Gobernador Area}, year = {1974}, publisher = {University of Arizona}, organization = {University of Arizona}, address = {Tucson}, keywords = {Chaco, date, dendrochronology, Gobernador, new mexico, southwest, tree ring}, author = {Robinson, William J. and Harrill, Bruce G. and Warren, Richard L.} }