%0 Journal Article %D 1978 %T Analysis of Tree Rings and Climatic Changes %A unknown %K changes %K climate %K dendrochronology %K environment %K tree rings %0 Magazine Article %D 1977 %T Climatic Information from Analysis of Cellulose Lignin and Whole Wood from Tree Rings %A unknown %K analysis %K cellulose %K climate %K dendrochronology %K lignin %K tree ring %K tree rings %B Nature %V 270 %N No. 5639 %0 Newspaper Article %B Tucson Citizen %D 1910 %T Address at High School on Halleys Comet %A unknown %K address %K comet %K Douglass %K Halleys %K high school %K historic %B Tucson Citizen %C Tucson