Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # NATURE / Ecosystems & Habitats / Rivers. 49 NATURE / Ecosystems & Habitats / Wilderness. 42 Nature -- Effect of human beings on 286 SEE ALSO: Human ecology 260 Nature -- Effect of human beings on -- Alaska. 1 Nature -- Effect of human beings on -- Alberta -- History. 1 Nature -- Effect of human beings on -- Amazon River Region 1 Nature -- Effect of human beings on -- Amazon River Region -- Drama. 2 Nature -- Effect of human beings on -- Amazon River Region -- Fiction. 1 Nature -- Effect of human beings on -- Antarctica. 3 Nature -- Effect of human beings on -- Aral Sea Region (Uzbekistan and Kazakhstan) 2 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >