00307nam a2200109Ia 4500008004100000020001800041040002500059082002400084100003700108245002800145260002400173240807s9999    xx            000 0 und d  a9781984625663  aNORSU-DumcNORSU-Dum  aRes/671.52/H19/2019  aedited by Aleksander Mratinkovic 0a3G handy guide: welding  b3G E-Learningc2019