Mansfield, Edwin <br/><br/>
The economics of technological change / 
Edwin Mansfield 
 - New York :  W. W. Norton,  c1968. 
 - x, 267 p. :  ill. ;  23 cm. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Technological innovations<br/>United_states. Research Industrial<br/>United_states.
<br/><br/><label>LC Class. No.: </label>HC110  / .T4M3 1968 
<br/><br/><label>Dewey Class. No.: </label>338.01  / M287e