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| Background | 2 |
| Conservation (Environment) | 2 |
| Environmental Education | 2 |
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| Environment | 1 |
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| Smithsonian | 2 |
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| Gilbert, Bil | 1 |
| Stegner, Wallace | 1 |
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Gilbert, Bil – Smithsonian, 1990
Presents a historical perspective of the environmental movement in the United States, beginning with Earth Day, 1970. Profiles "environmentalists" and describes environmental activities, achievements with environmental reform, turning points, and proenvironmental legislation from 1970-90. (MCO)
Descriptors: Background, Conservation (Environment), Environment, Environmental Education
Stegner, Wallace – Smithsonian, 1990
Describes the development of environmentalism in the United States as presented in literary works and through prominent early American thinkers up to Earth Day 1970. (MCO)
Descriptors: Authors, Background, Conservation (Environment), Environmental Education
