@article {768,
	title = {Tree-ring evidence of past climatic variability},
	journal = {Nature},
	volume = {276},
	year = {1978},
	note = {<p>Copies of this are available through the Tree Ring Laboratory. Please contact the lab for more information.</p>},
	keywords = {ancient, climate, environment, paleoclimatology, past, record, tree ring},
	author = {LaMarche, V.C.}
}
@proceedings {645,
	title = {Evidences of Cycles in Tree Ring Records},
	year = {1933},
	note = {This is available as a physical and electronic copy through the Tree Ring Lab. Please contact the curator for more information. pcreasman@ltrr.arizona.edu},
	keywords = {address, cycles, Douglass, evidence, historic, proceedings of the national academy of science, record, tree ring},
	author = {Douglass, A.E.}
}
