TY  - RPRT
TI  - Wolf howling and its role in territory maintenance
AU  - F.H. Harrington
AU  - L.D. Mech
PY  - 1979
DO  - 10.1163/156853979x00322
UR  - https://pubs.usgs.gov/publication/5221155
ID  - 5221155
ER  -