Encyclopedia of business information sources.
By: Compiled by the research staff, the National research bureau, inc.; W. C. Hanson, consulting editor.
Contributors: Hanson, W. C., ed.
Publisher: The National research bureau, inc.
Published: 1946
Place of publication: [Chicago]
Language: eng
Subjects: Information services.
Other titles: Business information sources.
Notes: Title-page in v. 1 only.
Loose-leaf; to be kept up to date by supplements.