00292nam a2200109Ia 4500008004100000082002300041100001200064245004200076250001200118260004400130300000800174240913s9999||||xx |||||||||||||| ||und||  aGS    004.6  JAI/C  aVK Jain 0aComputer net works and  Communication  a1st Ed.  bCyber Media India Ltd.aNew Delhic2003  a740