Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Clea (Fictitious character) -- Comic books, strips, etc. 4 Clean coal technologies -- United States 1 Clean energy. 10 Clean energy -- China. 1 Clean energy -- Fiction. 4 Clean energy -- Government policy. 1 Clean energy -- Government policy -- United States. 1 Clean energy industries 16 Clean energy industries -- Juvenile literature. 9 Clean energy industries -- United States. 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >