00281nam a2200109Ia 4500008004100000082001800041100001500059245004400074260003200118300001000150650001100160060110s9999    xx            000 0 und d  a25.431bKUM/P  aKUMAR, PSG  aPractical guide to DDC 20cBy PSG Kumar  bDattsons Publicationsc1990  a246p.  a25.431