000 00316cam a22001217a 4500
008 180718b1990 xxu||||| |||| 00| 0 eng d
082 _aP954 K96p
100 _aKumar, P.S.G.
245 _aPractical guide to DDC 20
_cby P.S.G. Kumar
260 _aNagpur
_bDattsons
_c1990
300 _a246p.
650 _aClassification
999 _c348955
_d348955