TY  - RPRT
TI  - Impacts of mute swans ( Cygnus olor ) on submerged aquatic vegetation in Illinois River Valley backwaters
AU  - Joshua D. Stafford
AU  - Michael W. Eichholz
AU  - Adam C. Phillips
PY  - 2012
DO  - 10.1007/s13157-012-0316-6
UR  - https://pubs.usgs.gov/publication/70173501
ID  - 70173501
ER  -