000			00294nam a2200121Ia 4500
100			_aOpen university, Educational Studies
020			_a0-335-03480-2
942			_cBK
245			_aStudents Workshop
260			_aThe open university press _c1973
082			_a372.41 O.U. /E. S.
300			_a101
999			_c14124 _d14124