Creating a bureau of water pollution control ...Royal Samuel Copeland, United States. Congress. Senate. Committee on Commerce · First published 1937Open the Tome
Crime and criminal practicesRoyal Samuel Copeland, Arthur Hendrick Vandenberg, United States. Congress. Senate. Committee on Commerce · First published 1937Open the Tome
Safety in the air ...Royal Samuel Copeland, Bennett Champ Clark, Wallace H. White, Vic Donahey, United States. Congress. Senate. Committee on Commerce · First published 1936Open the Tome
"Morro Castle" and "Mohawk" investigations ...Royal Samuel Copeland, United States. Congress. Senate. Committee on Commerce · First published 1935Open the Tome
National and state employment service ...Royal Samuel Copeland, Porter Hinman Dale, United States. Congress. Senate. Committee on commerce · First published 1932Open the Tome
How to conserve public health - the most important problem confronting mankindJoseph E. Ransdell, Royal Samuel Copeland, Henry Drury Hatfield · First published 1931Open the Tome
Refraction, including muscle imbalance and adjustment of glassesRoyal Samuel Copeland · First published 1906Open the Tome
