John, G.D <br/><br/>
Engineering and mechanical science/ 
John, G.D 
 - Lagos  Nelson tec books  1981 
 - 202pg, ill  Hbk 
<br/><br/><label>ISBN: </label>0177411244 
<br/><br/><label>LC Class. No.: </label>S. 46. T6 1981