000			00475nmm a2200145Ia 4500
008			230202s9999||||xx |||||||||||||||||und||
020			_a9783540687160
100			_aBarry P. Goettl, Henry M. Halff, Carol L. Redfield, Valerie J. Shute
245		0	_aIntelligent Tutoring Systems
250			_a1998
260			_bSpringer Berlin Heidelberg _c1998
440			_aLecture Notes in Computer Science
650			_aComputer Science
856			_uhttps://doi.org/10.1007/3-540-68716-5
999			_c27392 _d27392