Separation and identification of food-coloring substances
By: by W.E. Mathewson
Series: Bulletin / United States Department of Agriculture -- no. 448; Bulletin of the U.S. Department of Agriculture -- no. 448.
Publisher: U.S. Dept. of Agriculture
Published: 1917
Place of publication: Washington, D.C
Language: eng
Number of pages: 56
Subjects: Coloring matter in food
Notes: Cover title.

"February 15, 1917."

"Professional paper."