TY  - RPRT
TI  - Discharge ratings for control gates at Mississippi River lock and dam 21, Quincy, Illinois
AU  - A.J. Heinitz
PY  - 1987
DO  - 10.3133/wri874155
UR  - https://pubs.usgs.gov/publication/wri874155
ID  - wri874155
ER  -