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The Determination of Signs of Accelerated Ageing of Records made with Ballpoint Pen Inks by Using Chromatography Methods

  • Eva Freidenfelde
  • , Pēteris Mekšs
  • , Vitālijs Freidenfelds
  • , Certova Jevģēnija

    Research output: Contribution to journalArticlepeer-review

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