TY  - RPRT
TI  - Acute gastric dilatation and volvulus in a free-living polar bear
AU  - Steven C. Amstrup
AU  - Carol A. Nielsen
PY  - 1989
DO  - 10.7589/0090-3558-25.4.601
UR  - https://pubs.usgs.gov/publication/70184274
ID  - 70184274
ER  -