00297nam a2200109 a 450000500170000002000150001708200220003210000200005424500630007426000320013730000180016920251203091724.0  a007Y664331  a621.3692,bD, KAO  aKao, Charles K.  aOptical fiber systems: technology, design and applications  aNew YorkbMcGraw-Hillc1986  axi,204p, 22cm