TY  - RPRT
TI  - Potentiometric titration and equivalent weight of humic acid
AU  - A. M. Pommer
AU  - Irving A. Breger
PY  - 1960
DO  - 10.1016/0016-7037(60)90136-8
UR  - https://pubs.usgs.gov/publication/70010642
ID  - 70010642
ER  -