Dansereau, P. Challenge for survival:land,air & water for man in megalopolis - Columbia Univesity Press New York 1970 - xii,235 - Air pollution Wetland ecology Algal research = Challenge for survival Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 0382 Nat. Bib. Agency Control No.: 577.4 CHA Subjects--Topical Terms: Environmental Sciences Universal Decimal Class. No.: 577.4