000			00338nam a2200133Ia 4500
005			20240911060554.0
008			210621s9999 xx 000 0 und d
020			_a9780470874301 (hbk.)
082			_a658.312 _bCLA
100			_aClark, Ruth Colvin.
245		0	_aE-learning and the science of instruction :
250			_a3rd ed.
942			_cBK
999			_c628 _d628