Schmookler, J. <br/><br/>
Invention and economic growth 

 - Harvard University Press   Cambridge  1966 
<br/><br/><label>Nat. Bib. No.: </label>3399 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>608 SCH 
<br/><br/><label>Universal Decimal Class. No.: </label>608