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1Subjects: “...environmental movements...”
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2by Tyack, Peter L.“... a year. The cause of marine-mammal conservation became so popular at the dawn of the environmental...”
Published 2009
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3by The John Muir Center for Regional Studies“... the emergent national park idea, defined the preservationist wing of the American environmental movement...”
Published 2001
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4by The John Muir Center for Regional Studies“... the emergent national park idea, defined the preservationist wing of the American environmental movement...”
Published 2001
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Text