Conkey, Laura Elizabeth. 1982. ?Eastern U.s. Tree-Ring Widths And Densities As Indicators Of Past Climate?. Geoscience. Geoscience. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=748496351&sid=24&Fmt=2&clientId=43922&RQT=309&VName=PQD.