O'Brien, Robert <br/><br/>
Machines 

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 - New York  Time life books  1965 
 - 200p.:ill.   
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<br/><br/><label>ISBN: </label>
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<br/><br/><label>Subjects--Index Terms: </label>Natural sciences  Pure sciences  machinery  Machines 
<br/><br/><label>Dewey Class. No.: </label>5