Grading rosin at the still
By: by F.P. Veitch and C.F. Sammet
Contributors: Sammet, C. Frank (Charles Frank); United States. Bureau of Chemistry
Series: Circular / United States Department of Agriculture, Bureau of Chemistry -- no. 100; Circular (United States. Bureau of Chemistry) -- no. 100.
Publisher: U.S. Dept. of Agriculture, Bureau of Chemistry
Published: 1912
Place of publication: Washington, D.C
Language: eng
Number of pages: 41
Subjects: Gums and resins; Distillation apparatus
Notes: Caption title.

"Issued August 5, 1912."