Bachand, Bruce. 2006. ?Preclassic Excavations At Punta De Chimino, Peten, Guatemala: Investigating Social Emplacement On An Early Maya Landscape?. Anthropology. Anthropology. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=1296087131&sid=2&Fmt=2&clientId=43922&RQT=309&VName=PQD.

Pendall, Elise Gislaine. 1997. ?Precipitation Seasonality Recorded In D/h Ratios Of Pinyon Pine Cellulose In The Southwestern United States?. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=736806701&sid=12&Fmt=2&clientId=43922&RQT=309&VName=PQD.

Lloyd, Andrea. 1996. ?Patterns And Processes Of Treeline Forest Response To Late Holocene Climate Change In The Sierra Nevada, California?. Biology. Biology. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=742626921&sid=20&Fmt=2&clientId=43922&RQT=309&VName=PQD.

Clark, Susanmarie. 1987. ?Potential For Use Of Cottonwoods In Dendrogeomorphology And Paleohydrology?. Department Of Geosciences. Department Of Geosciences. Tucson: University of Arizona.

Harrill, Bruce G. 1982. ?Prehistoric Agricultural Adaptation And Settlement In Long House Valley, Northeastern Arizona?. Anthropology. Anthropology. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=752836931&sid=25&Fmt=2&clientId=43922&RQT=309&VName=PQD.

Sullivan, Alan. 1980. ?Prehistoric Settlement Variability In The Grosshopper Area, East-Central Arizona?. Anthropology. Anthropology. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=749715921&sid=26&Fmt=2&clientId=43922&RQT=309&VName=PQD.

Douglas, Arthur Vern. 1976. ?Past Air-Sea Interactions Over The Eastern North Pacific Ocean As Revealed By Tree-Ring Data?. Geoscience. Geoscience. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=760943281&sid=5&Fmt=1&clientId=43922&RQT=309&VName=PQD.

Wiseman, Fredrick Matthew. 1974. ?Paleoecology And The Prehistoric Maya: A History Of Man-Land Relationships In The Tropics?. Geoscience. Geoscience. University of Arizona.

Douglas, Arthur Vern. 1973. ?Past Air-Sea Interactions Off Southern California As Revealed By Coastal Tree-Ring Chronologies?. Geoscience. Geoscience. University of Arizona.

Brown, James Milton. 1968. ?The Photosynthetic Regime Of Some Southern Arizona Ponderosa Pine?. Biological Science. Biological Science. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=756120291&sid=2&Fmt=1&clientId=43922&RQT=309&VName=PQD.