TY  - RPRT
TI  - What is “natural”? : Yellowstone elk population - A case study
AU  - R.B. Keigley
AU  - Frederic H. Wagner
PY  - 2000
DO  - 10.1002/(sici)1520-6602(1998)1:4<133::aid-inbi3>3.0.co;2-u
UR  - https://pubs.usgs.gov/publication/1008636
ID  - 1008636
ER  -