000 00280nam a2200109Ia 4500
100 _aDunn, W R (ed) & Holroyd, C (ed)
942 _cBK
245 _aAspects of educational technology Vol. II
260 _aMethuen & co ltd, London
_c1969
082 _a371.3 Dun/Hol
300 _aix,671p
999 _c9708
_d9708