TY - BOOK AU - Mcclaran, Mitchel P. AU - Cole, David N. TI - Packstock in wilderness : Use, Impacts, Monitoring, and management U1 - 333.78217 21st ed PY - 1993/// CY - Ogden PB - Intermountain research station KW - Wilderness KW - pack-stock impact KW - packstock management techniques N1 - united states department of agriculture, general technical report INT -301 ER -