DIN EN ISO 2439:2009-05 Flexible cellular polymeric materials - Determination of hardness (indentation technique) (ISO 2439:2008); German version EN ISO 2439:2008
2009DIN EN ISO 2439:2009-05 Flexible cellular polymeric materials - Determination of hardness (indentation technique) (ISO 2439:2008); German version EN ISO 2439:2008
2009DIN EN ISO 2439:2009 Flexible cellular polymeric materials - Determination of hardness (indentation technique) (ISO 2439:2008); English version of DIN EN ISO 2439:2009-05