00286nam a2200121Ia 4500008004100000041001200041082001100053100001200064245006400076260000600140650000600146700001200152221030s9999    xx            000 0 und d  aEnglish  a105.23  aA. Leon 0aFundamentals of Information Technologycby A. Leon, M. Leon  c0  aB  aM. Leon