00293nam a2200121Ia 4500008004100000041000800041082002300049100001700072245003400089250001000123260003000133300000800163211209s2000    xx            000 0 und d  aeng  a621.38275 O 00 KEI  aKEISER, GERD  aOPTICAL FIBER COMMUNICATIONS   a3 ed.  aBOSTONbMCGRAW HILLc2000  a602