The Recurring Dark Ages : ecological stress, climate changes, and system transformation /
Sing C. Chew.
- Lanham : Altamira Press, 2007.
- xviii, 295 p. : ill., maps ; 23 cm.
- Trilogy on world ecological degradation .
- Chew, Sing C. Trilogy on world ecological degradation. .
Includes bibliographical references (p. 253-283) and index.