Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Cleage, Pearl 2 Cleage, Pearl 1948- 1 Clean coal technologies 1 SEE ALSO: Coal -- Environmental aspects 1 Clean coal technologies -- United States -- Fiction. 1 Clean energy 3 Clean energy -- Data processing. 1 Clean energy -- Fiction. 1 Clean energy -- Government policy. 1 Clean energy industries 8 Clean energy industries -- Juvenile literature. 3 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >