00257nam a2200097Ia 4500008004100000020001800041040002700059082002900086245002000115260002400135240809s9999    xx            000 0 und d  a9781680948516  aNORSU-MCIIcNORSU-MCII  aRes/526.9024624/B29/2018 0aBasic surveying  b3G E-Learningc2018