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    allen v. kneese
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    john v. krutilla
    (2)
    kenneth d. frederick (resources for the future, washington d.c., usa)
    (2)
    blair t. bower
    (1)
    charles w. howe (university of colorado-boulder, usa)
    (1)
    edward a. ackerman (university of colorado, usa)
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    george o.g. loff (formerly at colorado state university)
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    luther j. carter
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    otto eckstein (formerly at harvard university)
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    environmental science (see also chemistry
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