000 00313nam a2200121Ia 4500
100 _aRao, V.K., Reddy R.S. (ed)
020 _a81-7169-228-1
942 _cBK
245 _aThe nature of educational technology
260 _aCommonwealth Publishers, New Delhi
_c1992
082 _a371.3 Rao/Red
300 _aviii, 340
999 _c63579
_d63579