DIN ISO 3864-3:2012-11 Graphical symbols - Safety colours and safety signs - Part 3: Design principles for graphical symbols for use in safety signs (ISO 3864-3:2012)
2012DIN ISO 3864-3:2012-11 Graphical symbols - Safety colours and safety signs - Part 3: Design principles for graphical symbols for use in safety signs (ISO 3864-3:2012)
2012DIN ISO 3864-3:2012 Graphical symbols - Safety colours and safety signs - Part 3: Design principles for graphical symbols for use in safety signs (ISO 3864-3:2012)
2007DIN ISO 3864-3:2007 Graphical symbols - Safety colours and safety signs - Part 3: Design principles for graphical symbols for use in safety signs (ISO 3864-3:2006) English version of DIN ISO 3864-3:2007-02