Κανονική προβολή Προβολή MARC Προβολή ISBD

Great lakes environmental issues. - Columbus : Ohio Sea Grant Publications, 1977. - 180 p. : ill. ; 28 cm. - Earth Systems - Education Activities for Great Lakes Schools. EP-086. .

Subjects--Topical Terms:
Thermal pollution of rivers, lakes, etc.
Environmental pollution
Environment protection
Water pollution

Dewey Class. No.: 577 GRE