00277nam a2200109Ia 4500008004100000020001800041041000800059100002200067245003700089260003300126300000800159211209s2006    xx            000 0 und d  a9788188849200  aeng  aKRISHNA KUMAR D N  aTELECOMMUNICATION AND SWITCHING   bSANGUINE TECHNICAL PUBc2006  a304