Schmookler, J. <br/><br/>
Patents, invention and economic change: data and selected essays 

 - Harvard University Press  Cambridge  1972 
 - xvii,452,tables 
 - Economic change American economy Growth of knowledge Technological change Industrial growth Patent statistics 
<br/><br/><label>Nat. Bib. No.: </label>3398 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>608 SCH 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering & Technology
<br/><br/><label>Universal Decimal Class. No.: </label>608