https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13964229Edit ImageSaveSaveEditCropCustom TextChemistry: various crystalline substances. Coloured engraving.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 812 x 1200 px | 300 dpiLarge JPEG 1304 x 1928 px | 300 dpiFree DownloadChemistry: various crystalline substances. Coloured engraving.More