TY - RPRT TI - Cross-boundary issues for National Parks: What works "on the ground." AU - M. Buechner AU - C. Schonewald-Cox AU - R. Sauvajot AU - B. Wilcox PY - 1992 DO - 10.1007/bf02645670 UR - https://pubs.usgs.gov/publication/1007875 ID - 1007875 ER -