TY  - RPRT
TI  - Declines in aquatic vegetation in navigation pool no. 8, upper Mississippi River between 1975 and 1991
AU  - John R. Fischer
AU  - Thomas O. Claflin
PY  - 2006
DO  - 10.1002/rrr.3450110205
UR  - https://pubs.usgs.gov/publication/70006887
ID  - 70006887
ER  -