Biblio
“Modeling Prehistoric Climatic Variability And Agricultural Production In Southwestern Colorado: A Gis Approach”. Anthropology. Anthropology. Washington State University. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=747133751&sid=7&Fmt=2&clientId=43922&RQT=309&VName=PQD.
. 1990. . 1998.
. 1994.
“Mathamatical Analysis Of Geophysical Data”. Université catholique de Louvain.
. 1981. “Methods For Analyzing Climatic Variations In The North Pacific Sector And Western North America For The Last Few Centuries”. Meteorology. Meteorology. University of Wisconsin. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=760425931&sid=12&Fmt=1&clientId=43922&RQT=309&VName=PQD.
. 1975.