TY  - RPRT
TI  - Data on natural organic substances in dissolved, colloidal, suspended-silt and -clay, and bed-sediment phases in the Mississippi River and some of its tributaries, 1987-90
AU  - J.A. Leenheer
AU  - T.I. Noyes
AU  - P.A. Brown
PY  - 1994
DO  - 10.3133/wri934204
UR  - https://pubs.usgs.gov/publication/wri934204
ID  - wri934204
ER  -