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PROTOTYPE OF LINEAR PARABOLIC REFLECTOR USED TO GATHER THE SUN'S ENERGY AND HEAT FLUID IN THE CENTER PIPE TO... NARA .tif Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Norton Boyd Photographer File PROTOTYPEOFALINEARPARABOLICREFLECTORUSEDTOGATHERTHESUN'SENERGYANDHEATFLUIDINTHECENTERPIPETO