@article {763,
	title = {Tree Rings A Record of Climate Past},
	year = {1977},
	note = {<p>Copies of this are available through the Tree Ring Laboratory. Please contact the curator for more information. pcreasman@ltrr.arizona.edu</p>},
	publisher = {U.S. Department of Commerce National Oceanic and Atmospheric Environmental Data Service},
	address = {Washington, D.C. },
	keywords = {climate, climatology, dendrochronology, environment, tree rings},
	author = {Fritts, H.}
}
@article {928,
	title = {Reconstruction of Past Climatic Variability (A Progress Report) 1 January through 30 June 1974},
	year = {1974},
	institution = {Laboratory of Tree-Ring Research},
	type = {Fourth Semi-Annual Technical Report},
	address = {Tucson},
	keywords = {ARPA, climatic variability, dendroclimatology, past climate, reconstruction, tree rings},
	author = {Fritts, H.}
}
@article {929,
	title = {Reconstruction of Past Climatic Variability (A Progress Report) 30 June through 31 December 1974},
	year = {1974},
	institution = {Laboratory of Tree-Ring Research},
	type = {Fifth Semi-Annual Technical Report},
	address = {Tucson},
	keywords = {ARPA, climatic variability, dendroclimatology, past climate, reconstruction, tree rings},
	author = {Fritts, H.}
}
@booklet {759,
	title = {Paleoclimatology},
	year = {1973},
	keywords = {ancient, climate, dendrochronology, environment, paleoclimatology, tree rings},
	author = {Fritts, H.}
}
@article {758,
	title = {Growth Rings of Trees: Their Correlation with Climate},
	volume = {154},
	year = {1966},
	note = {<p>Copies of this are available through the Tree Ring Laboratory. Please contact the curator for more information. pcreasman@ltrr.arizona.edu</p>},
	keywords = {climate, dendrochronology, growth, tree rings},
	author = {Fritts, H.}
}
