@article {788,
	title = {Trees and Droughts in Arizona},
	journal = {Professional Engineer},
	year = {1931},
	note = {This title is available through the Tree Ring Laboratory; please contact the lab for more information. },
	keywords = {climate, dendrochronology, Douglass, droughts, environment, historic, tree, tree ring},
	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.}
}
@article {632,
	title = {A Method of Estimating Rainfall by the Growth of Trees},
	journal = {Bulletin of the American Geographic Society},
	volume = {XLVI},
	year = {1914},
	keywords = {Douglass, estimate, estimating, growth, method, rainfall, tree},
	author = {Douglass, A.E.}
}
