000 00350nam a2200097Ia 4500
008 120223s9999 xx 000 0 und d
082 _a371.3028 ASP
100 _aMann A P
245 _aAspects of educational technology
260 _bIsaac Pitman and sons
_aLondon
_c1969
999 _c149607
_d149607