@book {620,
	title = {Tree-Ring Dates from New Mexico I,O,U Central Rio Grande Area},
	year = {1972},
	publisher = {University of Arizona},
	organization = {University of Arizona},
	address = {Tucson},
	keywords = {Archaeology, date, dendrochronology, new mexico, rio grande area, tree rings},
	author = {Robinson, William J. and Hannah, John W. and Harrill, Bruce G.}
}
@book {613,
	title = {Tree-Ring Dates from New Mexico M-N,S,Z Southwestern New Mexico Area},
	year = {1970},
	publisher = {University of Arizona},
	organization = {University of Arizona},
	address = {Tucson},
	keywords = {date, dating, dendrochronology, new mexico, southwest, tree ring},
	author = {Bannister, Bryant and Hannah, John W. and Robinson, William J.}
}
@book {612,
	title = {Tree-Ring Dates from Arizona K Puerco--Wide Ruin--Ganado Area},
	year = {1966},
	publisher = {University of Arizona},
	organization = {University of Arizona},
	address = {Tucson},
	keywords = {date, dendrochronology, Puerco wide ruin, southwest},
	author = {Bannister, Bryant and Hannah, John W. and Robinson, William J.}
}
