@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.}
}
@article {644,
	title = {Evidence of Climatic Effects in the Annual Rings},
	journal = {Ecology},
	volume = {1},
	year = {1920},
	keywords = {annual rings, climate, climatic, Douglass, Ecology, effect, effects, evidence, historic, rings, tree},
	author = {Douglass, A.E.}
}
