O'Brien, Robert,  1911- <br/><br/>
Machines 
by Robert O'Brien and the editors of Life. 
 - New York  Time, Inc.  c1964. 
 - 200 p.  illus. (part col.) ports.  28 cm. 
<br/><br/>Bibliography: p. 196. 
<br/><br/>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Machinery.
<br/><br/><label>Dewey Class. No.: </label>Cir 621.8 L62m 1964