000 00315nam a2200121Ia 4500
100 _aedited by Janardan Prasad and Vijay Kumari Kaushik
020 _a81-7391-201-7
942 _cBK
245 _aAdvanced educational technology
260 _aKanishka, New Delhi
_c1997
082 _a371.33 Pra/Kau
300 _av,284p
999 _c35031
_d35031