Tomato ketchup under the microscope
Subtitle: with practical suggestions to insure a cleanly product.
By: By B.J. Howard ...
Series: United States. Dept. of Agriculture. Bureau of Chemistry. Circular -- no. 68; Circular (United States. Bureau of Chemistry) -- no. 68.
Publisher: Govt. print. off.]
Published: 1911
Place of publication: [Washington
Subjects: Ketchup.