RYANS, JAMES L. <br/><br/>
PROCESS VACUUM SYSTEM :   DESIGN AND  OPERATION/  
J.L. RYANS, D.L. ROPER. 
 - NEW YORK ; MEXICO:   MCGRAW-HILL  [198 
 - XII, 356 P.  23 CM. 
<br/><br/> INCLUYE BIBLIOGRAFIAS E INDICE. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>1.VACIO - TECNOLOGIA.
<br/><br/><label>Dewey Class. No.: </label>621.55 R93