00283nam a2200097Ia 4500008004100000020001800041100001800059245006100077260002800138300001900166180315s9999    xx            000 0 und d  a9780071792424  aQualman, Erik  aDigital Leader :b5 simple keys to success and influence  aUSA :b2012cMcGrawHill  aiii, 272 pages