ASME A17.1 Elevators and escalators :   Interpretations Nro.18 /  
The American Society of Mechanical Engineers. 
 - New York :   The American Society of Mechanical Engineers. ASME,   june 1993-may 1994. 
 - 38 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ESCALERAS MECANICAS<br/>MONTACARGAS<br/>ASCENSORES<br/>NORMAS
<br/><br/><label>Universal Decimal Class. No.: </label>621.876