DIRECTIONAL VALVES FOR PROFIT-MAKING DESIGNS 

 - S.E. 
 - S.L. Sin Pais  S.E.  1978 
<br/><br/> CLASIFICACION: 621.84 
<br/><br/><label>LCCN: </label>9793 
<br/><br/><label>Dewey Class. No.: </label>621.84