0500 Oau
1100 1990
2050 ##0##urn:nbn:de:hebis:04-ep0002-1990-168-57325
2051 ##0##10.17192/ep1990.3.5732
3000 Mayer-Freiwaldau, Rudolf
4000 Schorb, Bernd/Theunert, Helga: Ran an den Computer?
4085 ##0##=s MB=u https://archiv.ub.uni-marburg.de/ep/0002/1990/168/5732=x H