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1“…Washington DC: Greenpeace…”
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6“…[Washington D.C.]: WRI…”
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7“…Washington D.C.: Friends Of The Earth…”
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8“…Washington DC: American Psychological Association…”
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10“…Washington, DC: Center for Transatlantic Relations…”
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15“…Washington D.C.: Worldwatch Institute; London: Earthscan Publications…”
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16by Brown, Lester R., Flavin, Christopher, Postel, Sandra, Starke, Linda, Huys, Kathleen, Filapek, Rudi“…Washington D.C.: Worldwatch Institute; Berlaar: Pauli Publishing…”
Published 1993
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17by Litwak, Robert“…Washington, DC: Woodrow Wilson Center Press; Baltimore: Johns Hopkins University Press…”
Published 2007
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