An empirical study of U.S. foreign trade classification during 1950, I-70.4.
Publisher: The Author
Published: 1971
Place of publication: [Philadelphia]
Language: eng
Subjects: United States -- Commerce.
Notes: Thesis (Ph.D.) - University of Pennsylvania.

Includes bibliographical references.

Microfilm (positive). Ann Arbor, Mich., University of Microfilms 1971.

SHORT CIRCULATION RECORD.