00248nam a2200109Ia 4500008004100000041001200041082001100053100002000064245004200084260000600126650000600132221030s9999    xx            000 0 und d  aEnglish  a105.23  aD. R. Choudhary 0aNetwork & Systemscby D. R. Choudhary  c0  aB