Rollins, Mathew Gregory. 2000. ?Twentieth Century Fire Patterns In The Gila/aldo Leopold Wilderness Areas, New Mexico And The Selway-Bitterroot Wilderness Area, Idaho/montana?. School Of Renewable Natural Resources. School Of Renewable Natural Resources. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=728349901&sid=9&Fmt=2&clientId=43922&RQT=309&VName=PQD.

Riggs, Charles. 1999. ?The Architecture Of Grasshopper Pueblo: Dynamics Of Form, Function, And Use Of Space In A Prehistoric Community?. Anthropology. Anthropology. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=733967641&sid=16&Fmt=2&clientId=43922&RQT=309&VName=PQD.

Ryerson, Daniel E. 1999. ?Tree-Ring Reconstruction Of Western Spruce Budworm Outbreaks In The Rio Grande National Forest, Colorado?. School Of Renewable Natural Resources. School Of Renewable Natural Resources. Tucson: University of Arizona.

Rees, Kathleen Anne. 1988. ?A Quantitative Analysis Of A Physically Based Predictive Model Of Sediment Yield For Small Mountainous Watersheds In Southern California?. University of California.

Rogge, Eugene. 1983. ?Little Archaeology, Big Archaeology : The Changing Context Of Archaeological Research?. Anthropology. Anthropology. University of Arizona. no copy on file in LTRR.

Rauscher, Harald M. 1977. ?An Analysis Of Radial Growth Of Chestnut Oak And Pitch Pine?. Virginia Polytech Institute and State University.

Reille, Maurice. 1975. ?Contributions Pollen Analytique A L?Histoire Tardiglaciaire Et Holocene De La Vegetation De La Montagne Corse?. Université d?Aix-Marseille III.

Bowers, Lynne Jordan. 1973. ?Tree-Ring Dating Of The Bald Cypress (Taxodium Distichum [L] Rich.) In The Lower Mississippi Valley?. Biology. Biology. Arkansas State University.

Reitan, Clayton Harold. 1971. ?An Assessment Of The Role Of Volcanic Dust In Determining Modern Changes In The Temperature Of The Northern Hemisphere?. University of Wisconsin. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=756913801&sid=8&Fmt=1&clientId=43922&RQT=309&VName=PQD.

Robinson, William J. 1967. ?Tree-Ring Materials As A Basis For Cultural Interpretations?. Anthropology. Anthropology. University of Arizona.