00269nam a2200109Ia 4500008004100000041001200041082001100053100002300064245006000087260000600147650000600153221030s9999    xx            000 0 und d  aEnglish  a105.23  aJeffery L. Whitten 0aSystem Analysis & Design Methodscby Jeffery L. Whitten  c0  aB