TY - RPRT TI - Comparison of helicopter and ground surveys for North American elk Cervus elaphus and mule deer Odocoileus hemionus population composition AU - Louis C. Bender AU - Woodrow L. Myers AU - William R. Gould PY - 2003 DO - 10.2981/wlb.2003.051 UR - https://pubs.usgs.gov/publication/70025184 ID - 70025184 ER -