Industrial classification and codes for use in public employment office, July 1938
By: U. S. Dept. of Labor, Employment Service.
Publisher: U. S. Govt. Print. Off.
Published: 1938
Place of publication: Washington
Language: eng
Number of pages: 78
Subjects: Industries -- Classification.
Notes: At head of title: United States Department of labor.  Frances Perkins, secretary.  United States Employment service. W. Frank Persons, director.