O'Brien, Robert <br/><br/>
LIFE SCIENCE LIBRARY :  MACHINES /  
Robert O'Brien 
 - Second Edition 
 - 200 pages :   colour illustration ;   30 cm 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>machines--Encyclopedia<br/>gear--encyclopedia
<br/><br/><label>Dewey Class. No.: </label>031.02  / MAC