%0 Conference Proceedings %B Proceedings of the National Academy of the Sciences %D 1933 %T Evidences of Cycles in Tree Ring Records %A Douglass, A.E. %K address %K cycles %K Douglass %K evidence %K historic %K proceedings of the national academy of science %K record %K tree ring %B Proceedings of the National Academy of the Sciences %0 Journal Article %D 1925 %T Phi Kappa Phi Installation Address %A Douglass, A.E. %K address %K Douglass %K installation %K journal %K phi kappa phi %0 Generic %D 1923 %T Historical Address %A Douglass, A.E. %K address %K Douglass %K historic %K steward observatory %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 %0 Newspaper Article %B Tempe Normal School %D 1906 %T Physical Geography %A Douglass, A.E. %K address %K Douglass %K Geography %K historic %K newspaper %K school %K tempe %B Tempe Normal School %V I %N No. 6