| GMD | Text |
| Classification | 574.526325 C818 |
| Publisher | Washington, National Geographic Society, c1976 |
| Subject | Swamp ecology -- Juvenile literature. |
| Series | Books for young explorers. |
| Description | 32 p. : ill. ; 29 cm. |
| ISBN | 9780870442636 |
| Additional ISBN | 0870442635 |