https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13955687Edit ImageSaveSaveEditCropCustom TextPig powders : an invaluable remedy for keeping pigs free from disease, more especially from swine fever : Directions. One powder to be given every few weeks.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 779 px | 300 dpiLarge JPEG 3500 x 2271 px | 300 dpiBest Quality JPEG 4681 x 3037 px | 300 dpiFree DownloadPig powders : an invaluable remedy for keeping pigs free from disease, more especially from swine fever : Directions. One powder to be given every few weeks.More