Spotts, M. F.  <br/><br/>
Design of machine elements /   
M. F. Spotts. 
 - New York :   Prentice-Hall,   1948. 
 - x, 402 p. :   il. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ELEMENTOS DE MAQUINAS
<br/><br/><label>Universal Decimal Class. No.: </label>621.81