https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13991355Edit ImageSaveSaveEditCropCustom TextOn the geographical distribution of some tropical diseases and their relation to physical phenomena / by R.W. Felkin.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 949 px | 300 dpiLarge JPEG 1626 x 1286 px | 300 dpiFree DownloadOn the geographical distribution of some tropical diseases and their relation to physical phenomena / by R.W. Felkin.More