00273nam a2200109Ia 4500008004100000041001200041100001500053245006600068260000600134650000600140700001700146221030s9999    xx            000 0 und d  aEnglish  aV. K. Garg 0aPrinciples & Applications of GSMcby V. K. Garg, J. E. Wilkes  c0  aB  aJ. E. Wilkes