The stone, clay and glass products and nonmetallic mining industry in Puerto Rico.

APA Citation

United States. Employment Standards Administration. Wage and Hour Division. (1974). The stone, clay and glass products and nonmetallic mining industry in Puerto Rico. [Washington]: U.S. Dept. of Labor, Employment Standards Administration, Wage and Hour Division.

MLA Citation

United States. Employment Standards Administration. Wage and Hour Division. The Stone, Clay And Glass Products And Nonmetallic Mining Industry In Puerto Rico. [Washington]: U.S. Dept. of Labor, Employment Standards Administration, Wage and Hour Division, 1974.