00748nam a2200217Ia 4500003000900000008004100009040001600050080001500066110005300081245008100134250001700215260004800232300001000280490002100290650002700311650003200338650003600370942000700406999001500413952010200428IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a25.45bUDC  aInternational Federation for Documentation97844 0aUniversal decimal classificationcInternational Federation for Documentation  a3rd rev. ed.  aLondonbBritish Standards Institutionc1961  a254p.  aB.S. 1000A: 1961  a Classification97845  aBook Classification 97846  aClassification, Decimal 97847  cBK  c4492d4492  00104070aBANbBANcGENd1974-09-07l0o025.45/ UDCp5017r2021-11-05w1974-09-07yBKG€ 8.20