@book {623, title = {Tree-Ring Dates from Colorado V Mesa Verde Area}, year = {1974}, publisher = {University of Arizona}, organization = {University of Arizona}, address = {Tucson}, keywords = {colorado, date, dendrochronology, mesa verde, southwest, tree ring}, author = {Robinson, William J. and Harrill, Bruce G.} } @article {782, title = {Crossdating at Mesa Verde National Park}, journal = {Journal of Forestry}, volume = {40}, year = {1942}, note = {Copies of this are available through the Tree Ring Laboratory; please contact the lab for more information. }, keywords = {Archaeology, crossdating, dating, Douglass, Forestry, historic, mesa verde, southwest, tree ring}, author = {Douglass, A.E.} }