Bibliography

See D. W. Ehrenfeld, Conserving Life on Earth (1972); D. Worsher, Nature's Economy (1977); R. Nash, Wilderness and the American Mind (3d ed. 1982); S. P. Hays, Conservation and the Gospel of Efficiency. (1986).

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

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