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International Dark-Sky Association since 1988 “ . . . to preserve and protect the nighttime environment and our heritage of dark skies through quality outdoor lighting.” Executive Director David L. Crawford, Ph.D.
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Document Date: 2012-05-24 16:23:47
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International Dark-Sky Association since 1988 “ . . . to preserve and protect the nighttime environment and our heritage of dark skies through quality outdoor lighting.” Executive Director David L. Crawford, Ph.D.