Date: 2015-03-13 12:22:26Light pollution Light sources International Dark-Sky Association Observational astronomy Lighting Borrego Springs California Skyglow Borrego Natural environment Time Dark-sky movement Physics | | Night Sky Friendly Business Recognition Program Borrego Business Application PROGRAM: Established by the Borrego Springs Dark Sky Coalition, this program recognizes businesses and organizations in the Borrego Valley thaDocument is deleted from original location. Use the Download Button below to download from the Web Archive.Download Document from Web Archive File Size: 512,03 KB
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