00371nam a2200133Ia 4500001000500000005001700005008004100022020001500063082001600078100001900094245006500113260001600178650004300194373020261006003727.0120911s9999    xx            000 0 und d  a0077074254  a621.369 SYM  aSyms, Richard   aOptical guided waves and devices / Richard Syms, John Cozens  aMcgraw Hill  aOptical wave guides       Fiber optics