00810nam0-22003131i-450-9900009687804033210-471-92894-1000096878FED01000096878(Aleph)000096878FED0100009687820000920d1971----km-y0itay50------baengPhotochromismedited by Glenn H. BrownNew York [etc.]Wiley-Interscience1971Techniques of chemistry3OtticaOttica elettronica535537.56Brown,Glenn H.45362ITUNINARICAUNIMARCBK99000096878040332127-0628233FI1FI1Photochromism358525UNINAING01