Sutherland, Elaine Kennedy. 1989. ?The Effect Of Prescribed Burning On Southwest Ponderosa Pine Growth?. 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=746080281&sid=4&Fmt=2&clientId=43922&RQT=309&VName=PQD.