000 00253nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aMangal, S.K
245 0 _aAudio Visual Education
260 _aNew Delhi
_bABD
_c2001
300 _a274p.
942 _cBK
999 _c11412
_d11412