Dennis, N. T. M. <br/><br/>
Vaccum system design   
by N. T. M. Dennis and T. A. Heppell 
 - London  Chapman and Hall  1968 
 - xi, 223p.Incl. index 
 - High Vacuum Series ed. by L. Holland .
<br/><br/><label>Dewey Class. No.: </label>621.55  / N682;1