Commons Attribution-Share Alike 4.0 truetrue English Crystals of nickel sulfate on copper Polish Kryształy siarczanu niklu(II) na miedzi author name string:
org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Coppersulfate observed under optical microscope Italian Solfato di rame osservato