TY - BOOK AU - Griffin,William Gatewood AU - Homan,Sheldon William ED - United States. TI - The principles and techniques of mechanical guarding AV - TJ1177 .G78 PY - 1959/// CY - Washington] PB - U.S. Dept. of Labor, Bureau of Labor Standards KW - Machinery KW - Safety appliances N1 - "Replaces Special bulletin no. 7, Suggested standards for industrial safeguards," issued in 1942 by the Bureau under its earleir name, Division of Labor Standards ER -