Preliminary summary of census of dyes and coal-tar chemicals, 1921.
Contributors: Watson, Warren N.; De Long, Carl Raymond.
Publisher: Govt. print. off.
Published: 1922
Place of publication: Washington
Language: eng
Number of pages: 73
Subjects: Dyes and dyeing.; Coal-tar products.
Notes: At head of title: United States Tariff commission, Washington ...
"In the preparation of this report, the Tariff commission has had the services of Warren N. Watson, and C. R. De Long, of the Chemical division, and others of the commission's staff."--Introd., p.vii.