@article {683, title = {Some Topographic and Climatic Characters in the Annual Ring of the Yellow Pines and Sequoias of the Southwest }, journal = {Proceedings of the American Philosophical Society}, volume = {LXI}, year = {1922}, keywords = {annual, characteristics, characters, climate, climatic, dates, dating, Douglass, environment, ring, sequoias, southwest, topographic, tree ring, tree rings, yellow pine}, author = {Douglass, A.E.} }