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1Subjects: “…economic implication…”
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4Published 1994Subjects: “…economic implication…”
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6Subjects: “…economic implication…”
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11by National Bureau of Economic Research, Cambridge, Popp, David, Newell, Richard, Jaffe, Adam B.Subjects: “…economic implication…”
Published 2009
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12Published 1996Subjects: “…economic implication…”
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15Subjects: “…economic implication…”
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17Subjects: “…economic implication…”
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20Published 1997Subjects:TEXT