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2Ecoscience : population, resources, environment / Paul R. Ehrlich, Anne H. Ehrlich, John P. Holdren.by Ehrlich, Paul R. (Paul Ralph), 1932-
Published 1977Edition: 3rd ed.Other Authors: '; “...Holdren, John P...”
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3by Ehrlich, Paul R. (Paul Ralph), 1932-Other Authors: '; “...Holdren, John P...”
Published 1973
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4Published 1971Other Authors: '; “...Holdren, John P...”
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