000 00256nam a2200121 4500
003 OSt
082 _a371.3 KHA - T
100 _aKhan, I
245 _aTeaching at a Distance
260 _aDelhi
_bAmar Prakashan
_c1989
300 _a165
942 _2ddc
_cBK
999 _c137673
_d137673