000 00298nam a2200145 4500
082 _a374.4 SWA-D
100 _aSwapna Borah
245 _aDistance Education
250 _a
260 _aDelhi
_bAmar Prakasan
_c1987
300 _a
490 _a
650 _aDistance Education
942 _cBK
999 _c591525
_d591525