1. AN ASSESSMENT OF THE IMPACT OF SOCIAL TRAILS USE ON CULTURAL RESOURCES IN TECHNICAL AREA 71 LOS ALAMOS NATIONAL LABORATORY, NEW MEXICO, CULTURAL RESOURCESREPORT NO. 252, SURVEY NO. 697 Document(s) Author: NISENGARD, JENNIFER E. ; MASSE, W. BRUCE ; SHERWOOD, SHERRI R. Number: LA-UR-06-5881 ; 2006