Ridley, John <br/><br/>
Safety at Work / 
John Riley & John Channing  
 - 7th Ed. 
 - USA :  Elsevier,  2008. 
 - xxiv, 1030p. ;  Hardbinding  25cm. 
<br/><br/><label>ISBN: </label>9780750680356 
<br/><br/><label>Dewey Class. No.: </label>363.1  / RID