00804nam0-22002891i-450-99000026642040332120001010000026642FED01000026642(Aleph)000026642FED0100002664220001010d--------km-y0itay50------baitay-------001yy<<The >>Optics of Nonimaging ConcentratorsLight and Solar Energy(by) W.T. Welford, R. Winston.New YorkAcademic Press1978XI,200 p., ill., 23 cm621Welford,Walter ThompsonWinston,RolandITUNINARICAUNIMARCBK99000026642040332104 000-99IRC 1283/LDINCHDINCHUNINAING01