000 00296 a2200121 4500
005 20250829153731.0
082 _a374.4
_bDIS
245 _aDistance Education
_b: an interface
260 _aHyderabad:
_bDr. B R A O U,
_c1994.
300 _b187p.
650 _aDistance Education
_9167701
942 _cBK
999 _c15725
_d15725