00275nam a2200097Ia 4500008004100000020001800041040002500059082002100084245004800105260002400153240807s9999    xx            000 0 und d  a9781680949025  aNORSU-DumcNORSU-Dum  aRes/513/T34/2018 0aTheory, practice and techniques in geometry  b3G E-learningc2018