Issued February 10, 1912. y. S. DEPARTMENT OF AGRICULTURE, BUREAU OF CHEMISTRY— BULLETIN ho. i47. H. W. WILEY, Chief of Bureau. COAL-TAE COLORS USED IN FOOD PRODUCTS. .1 BY BERNHARD C. HESSE, Ph. D. Expert, Bureau Chemistry. … WASHINGTON: GOVERNMENT PRINTING OFFICE. 1912.
Coal-tar colors · Coloring matter in food
Internet Archive · The Library of Congress · Public domain (published before 1931). Free to use for anything.
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