PORKESS R, GRAHAM E, BERRY J S. <br/><br/>
MECHANICS 2 
J S BERRY, E GRAHAM, R PORKESS. 
 - LONDON   HODDER AND STOUGHTON  1994 
 - 138P, ILL.  PBK 
<br/><br/><label>ISBN: </label>0340573015 
<br/><br/><label>LC Class. No.: </label>QA11.B4 1994