Coal-tar colors used in food products

Hesse, Bernhard Conrad, b. 1869, United States. Bureau of Chemistry, United States. Department of Agriculture · 1912 · Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Chemistry · 1 picture

Coal-tar colors · Coloring matter in food

Internet Archive · U.S. Department of Agriculture, National Agricultural Library · Public domain (published before 1931) · More from this library