000			00369nam a2200145Ia 4500
008			191206s9999 xx 000 0 und d
020			_a803900449
090			_aLB1032L34
245		0	_aLearning thru discussion
250			_a[Rev. ed.]
260			_aSage Publications
260			_cc[1969]
300			_a60 p. 22 cm.
999			_c16342 _d16342