Some rules for the safeguarding of hazardous machinery. 

 - Washington,  U.S. Govt. print. off.,  1936. 
 - 15 p.  57 plates.  22 cm. 
<br/><br/> At head of title: United States Dept. of labor ... Division of labor standards ...   Loose-leaf. 
<br/><br/><label>LCCN: </label>l  36000050 //r48 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Machinery--Safety appliances.<br/>Industrial safety.
<br/><br/><label>LC Class. No.: </label>HD7273  / .U55 1936 
<br/><br/><label>Dewey Class. No.: </label>331.82315