This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
OAT GROATS POISONED WITH ZINC PHOSPHATE COLORED GRAY FOR IDENTIFICATION. THE POISONED GRAIN IS NARA . Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Daniels Gene photographer Photographer Fresno County Calif National Archives at College Park Still Pictures RDDCS National