Occupational employment
Subtitle: optical instruments and lenses industry.
Contributors: United States. Bureau of Labor Statistics.
Series: Report -- 430-92.; Report (United States. Bureau of Labor Statistics) -- 430-92.
Publisher: U.S. Dept. of Labor/Bureau of Labor Statistics
Published: 1975
Place of publication: Washington, D.C
Language: eng
Subjects: Optical industry -- United States -- Employees -- Statistics.
Other titles: Optical instruments and lenses industry.
Notes: Caption title.

"January 1975."