000 00306nam a2200121Ia 4500
100 _aOpen University , Educational Studies
020 _a0-335-03479-9
942 _cBK
245 _aChildren With Special Problems
260 _aThe open university press
_c1973
082 _a372.41 O.U./E. S.
300 _a48
999 _c11948
_d11948