31. Healing the planet : strategies for resolving the environmental crisis / Paul R. Ehrlich and Anne H. Ehrlich Author: Ehrlich, Paul R Format: Book Language: English Published: 1992, c1991
32. Repairing a damaged world : an outline for ecological restoration / by Denis A. Saunders, Richard J. Hobbs and Paul R. Ehrlich ; with assistance from Jos Chatfield ... [et... Author: Saunders, D. A. (Denis Allan), 1947- Format: Book Language: English Published: [1993]
33. The cold and the dark : the world after nuclear war / Paul R. Ehrlich ... [et al.] ; foreword by Lewis Thomas ; the Conference on the Long-Term Worldwide Biological... Author: Conference on the Long-Term Worldwide Biological Consequences of Nuclear War, (1983 : Washington, D.C.) Format: Book Language: English Published: c1984
34. The Cassandra Conference : resources and the human predicament / edited by Paul R. Ehrlich and John P. Holdren Author: Cassandra Conference, (1985 : Texas A & M University) Format: Book Language: English Published: c1988
35. Reconstruction of fragmented ecosystems : global and regional perspectives / edited by Denis A. Saunders, Richard J. Hobbs and Paul R. Ehrlich Format: Book Language: English Published: 1993