Ridley, John <br/><br/>
Safety at work / 
John Ridley 
 - 2nd ed. 
 - London :  Butterworth-Heinemann,  1986 
<br/><br/><label>ISBN: </label>9780408008402 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Safety and health
<br/><br/><label>Dewey Class. No.: </label>658.56  / RID