00297nam a22001217a 4500020001500000040000900015082001900024100002200043245003100065250001600096260003200112650003100144  a0133145271  cNUST  a621.380414 PAL  aPalais, Joseph C.  aFiber Optic Communications  a2nd edition  aUSA:bPrentice Hall,c1988.  aFiber Optic Communications