000 00507nam a22001817a 4500
003 dpl
005 20180716113054.0
008 180716b xxu||||| |||| 00| 0 eng d
020 _c150.50
035 _aB-083252
040 _aDPL
_bEN
_c0
082 _a371.3
100 _aMangal,S.K.
245 _aEducation Technology
_cby S.K.Mangal
260 _aLudhiana
_bTandon Publications
_c2002
300 _a304p;
_bincludes References and Bibliography
_c20cm
942 _2ddc
_cEN
_h371.3
_mMAN
999 _c154080
_d154080