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020 _a812611214X
041 _aEnglish
082 _a370.112
_bMOD
100 _aS. Venkataiah.
_eed.
245 _aModern education
260 _c2002
_aNew Delhi
_bAnmol Publications
_g2002
300 _a288p.
650 _aEducation
942 _cLEB
999 _c24387
_d24387