000 00311nam a2200133Ia 4500
003 LDD
008 181029s9999 xx 000 0 und d
040 _cLDD
245 0 _aHandbook of distance education
260 _aNew Delhi
_bAIU
_c1985
300 _aviii,122p
901 _a1306
_b12-03-1998
942 _2ddc
_cBK
999 _c21472
_d21472