TY  - RPRT
TI  - Aliphatic structure of humic acids; a clue to their origin
AU  - Patrick G. Hatcher
AU  - G.E. Maciel
AU  - L.W. Dennis
PY  - 1981
DO  - 10.1016/0146-6380(81)90012-7
UR  - https://pubs.usgs.gov/publication/70012127
ID  - 70012127
ER  -