00458    a2200145   4500100004100000102000700041606001100048215001700059005001700076101000800093200012600101001000600227675001200233210006700245  a20040220                 y50          aCH  aNormas  a18 p.d30 cm20180928123441.00 aeng  aISO 690-2. 1997, Information and documentation - bibliographic references. Parte 2eelectronic documents or parts thereof80256  a006 INT  aGenèvecInternational Organization for Standardizationd1997