APA

olof w., rast w., . (1989). the control of eutrophication of lakes and reservoirs. uneesco: paris.

Chicago

olof walter, rast walter, . 1989. the control of eutrophication of lakes and reservoirs. uneesco: paris.

Harvard

olof w., rast w., . (1989). the control of eutrophication of lakes and reservoirs. uneesco: paris.

MLA

olof walter, rast walter, . the control of eutrophication of lakes and reservoirs. uneesco: paris. 1989.