TY  - RPRT
TI  - The contribution of humic substances to the acidity of colored natural waters
AU  - B.G. Oliver
AU  - E.M. Thurman
AU  - Ronald L. Malcolm
PY  - 1983
DO  - 10.1016/0016-7037(83)90218-1
UR  - https://pubs.usgs.gov/publication/70011320
ID  - 70011320
ER  -