Productivity of apprentice polishers, at various stages of apprenticeship, in the diamond cutting industry on the mainland (U.S) and in Puerto Rico. May 1943
Published: 1943
Language: eng
Number of pages: 27
Notes: At head of title: United States Dept. of labor. Wage and hour and public contracts divisions. New York, N.Y. Economics branch.

"Prepared by Manuel Cambouri."--p. i.

"Covers a much longer period of apprenticeship than the first study [U.S. Dept. of labor. Wage and hour division. Productivity of apprentices, issued in 1941]"--p. i.

Mimeographed.