000 00329nam a2200133Ia 4500
008 190710s9999 xx 000 0 und d
020 _a81-7341-233-2
082 _a371.3078 R
100 _aRuhela, Satya Pal
245 0 _aEducation technology
260 _aDelhi
_bIndian Publishers Distri
_c2002
300 _a362
942 _cBK
999 _c23283
_d23283