%0 Report %D 1977 %T Dendroclimatic Variability in the American Southwest A.D. 680 to 1970 %A Dean, Jeffrey S. %A Robinson, William J. %K climate %K dendrochronology %K dendroclimatology %K department %K interior %K national park service %K paleoclimate %K report %K southwest %K tree ring %K variability %I Laboratory of Tree-Ring Research %C Tucson %8 03/1977 %G English