000 00419nmm a2200145Ia 4500
008 230202s9999||||xx |||||||||||||||||und||
020 _a9783540461630
100 _aHermann Maurer
245 0 _aComputer Assisted Learning
250 _a1989
260 _bSpringer Berlin Heidelberg
_c1989
440 _aLecture Notes in Computer Science
650 _aComputer Science
856 _uhttps://doi.org/10.1007/3-540-51142-3
999 _c25661
_d25661