Lenart, Melanie. 2003. ?A Comparative Study Of Soil Disturbance From Uprooted Trees, And Mound And Pit Decay In Puerto Rico And Colorado?. Institute For The Study Of Planet Earth. Institute For The Study Of Planet Earth. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=765017541&sid=9&Fmt=2&clientId=43922&RQT=309&VName=PQD.