TY  - RPRT
TI  - Qualitative and quantitative bacteriniological studies on a fluidized sand biofilter used a semiclosed trout culture system
AU  - G. Bullock
AU  - J. Hankins
AU  - J. Heinen
AU  - C. Starliper
AU  - J. Teska
PY  - 1993
UR  - https://pubs.usgs.gov/publication/2002637
ID  - 2002637
ER  -