Encyclopaedia of occupational health and safety 
/ International Labour Office 
 - Geneva:   International Labour Office,   1972 
<br/><br/> Vol. 2 (L-Z); 755p. 
<br/><br/><label>ISBN: </label>9221010007 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial hygiene
<br/><br/><label>Subjects--Index Terms: </label>Industrial safety 
<br/><br/><label>Universal Decimal Class. No.: </label>R 614.8(038)   / L1.2