000 00306nam a2200121Ia 4500
001 86392
008 170722s9999 xx 000 0 und d
100 _aSharma, Bm
245 _aDistance education /
260 _aNew Delhi :
_bCommonwealth Publishers ,
_c1994.
300 _a463 p.
_c22.2cms
942 _cGEN
999 _c115008
_d115008