Walker, J. D. <br/><br/>
National Certificate Mechanical Engineering Science. 
J.d Walker 
 - London  English Universities Press  c1965. 
 - xiv, 305p. :bill.  21cm 
<br/><br/><label>ISBN: </label>003836395 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical Engineering