O'Brien, Robert. <br/><br/>
Machines 
by Robert O'Brien and the editors of Life. 
 - New York  Time, inc.  [1964] 
 - 200 p.  illus. (part col.) ports.  28 cm. 
 - Life science library .
<br/><br/>Bibliography: p. 196. 
<br/><br/><label>LCCN: </label>64014173  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Machinery
<br/><br/><label>LC Class. No.: </label>TJ147  / .O2 
<br/><br/><label>Dewey Class. No.: </label>621.09