Biblio
. Anon.1974. Secular Changes of Precipitation in the Rocky Mountains and Adjacent Western States. Geology and Geography. Geology and Geography. University of Boulder. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=758390521&sid=2&Fmt=1&clientId=43922&RQT=309&VName=PQD.
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