Search for: Title Author Subject Series Call number that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Cleage, Pearl 5 Clean coal technologies -- SEE ALSO: Coal -- Environmental aspects 4 Clean coal technologies -- United States -- Fiction 2 Clean energy 9 Clean energy -- Case studies. 1 Clean energy -- China. 1 Clean energy -- Colorado. 1 Clean energy -- Economic aspects -- Africa. 1 Clean energy -- Fiction. 5 Clean energy -- Government policy. 2 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >