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Keywords from Image Description:
A SKYLID LOUVERED SKYLIGHT THAT OPENS AND CLOSES AUTOMATICALLY AND REQUIRES NO EXTERNAL POWER SOURCE. USING A... NARA .tif Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Norton Boyd Photographer File ASKYLID ALOUVEREDSKYLIGHTTHATOPENSANDCLOSESAUTOMATICALLY ANDREQUIRESNOEXTERNALPOWERSOURCE