|
1
|
|
Eutrophication -- Control -- Erie, Lake. / https://id.loc.gov/authorities/subjects/sh85045915 https://id.loc.gov/authorities/subjects/sh85044620-781 : McGucken, William.
|
2000
|
1
|
|
2
|
|
Eutrophication -- Control -- International cooperation. / https://id.loc.gov/authorities/subjects/sh85045915 https://id.loc.gov/authorities/subjects/sh00006352
|
2005
|
1
|
