00335nam a2200133 a 450000500170000002000150001708200200003210000170005224500240006926000250009330000250011850000390014370000190018220251203110524.0  a8185618100  a621.381045bGHA  aGhatak, Ajoy  aOptical electronics  aCambridgebCUPc1987  axiv,624p.c22cm.bPB  aIndian reprint of Foundation books  aThyagarajan, K