00782nam0-22002891i-450-99000048782040332120090330133449.00-442-26430-5000048782FED01000048782(Aleph)000048782FED0100004878220020821d1982----km-y0itay50------baenga-------001yyEnergy saving lighting systemsPrafulla C. SorcarNew York [etc.]Van Nostrand Reinhold©1982346 p.ill.24 cmIlluminotecnica621.32'2Sorcar,Prafulla C.ITUNINARICAUNIMARCBK99000048782040332110 D IV 72260 DEEDINELDINELUNINA