000 00313nam a2200145 4500
082 _a374.4 RAO-D
100 _aRao, V K
245 _aDistance education
250 _a
260 _aNew Delhi
_bA P H Publishing Corporation
_c2003
300 _a
490 _a
650 _aDistance Education
942 _cBK
999 _c599247
_d599247