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. - Dark Skies - Document - PDFSEARCH.IO

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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. Add to Reading List Document Date: 2012-05-24 16:23:47 Open Document File Size: 22,65 KB Share Result on Facebook

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.Add to Reading List