@article {790,
	title = {Tree Rings and Climatic Cycles, Laboratory of Tree-Ring Research, Astronomical Studies},
	volume = {XXIV},
	year = {1944},
	publisher = {University of Arizona},
	address = {Tucson},
	keywords = {astronomy, climate, dating, dendrochronology, Douglass, environment, fraternity, historic, tree ring, tree ring laboratory},
	author = {Peterson, Roy M. and Douglass, A.E.}
}
