TY  - RPRT
TI  - Lake eutrophication— A natural process
AU  - Phillip E. Greeson
PY  - 2007
DO  - 10.1111/j.1752-1688.1969.tb04920.x
UR  - https://pubs.usgs.gov/publication/70224595
ID  - 70224595
ER  -