Edukira joan

Txantiloi:GHS corrosion

Wikipedia, Entziklopedia askea

Korrosio piktograma "Globally Harmonized System of Classification and Labelling of Chemicals (GHS)" sisteman

"https://eu.wikipedia.org/w/index.php?title=Txantiloi:GHS_corrosion&oldid=3588906"(e)tik eskuratuta