TY - RPRT TI - Water-quality variability in four reservoirs in Phillips and Valley Counties, Montana, May through August 1981 AU - R. F. Ferreira AU - J. H. Lambing PY - 1986 DO - 10.3133/wri854209 UR - https://pubs.usgs.gov/publication/wri854209 ID - wri854209 ER -