Coal-tar colors used in food products.
By: By Bernhard C. Hesse...
Series: U.S. Dept. of agriculture. Bureau of chemistry. Bulletin -- no. 147; Bulletin (United States. Bureau of Chemistry) -- no. 147
Publisher: Govt. print. off.
Published: 1912
Place of publication: Washington
Subjects: Coal-tar colors.; Coloring matter in food.