Salter, W. E. G. <br/><br/>
Productivity and technical change 
by W. E. G. Salter ; with an addendum by W. B. Reddaway. 
 - 2d ed. 
 - Cambridge  Cambridge University Press  1969. 
 - xiv, 220 p.  ill. 
<br/><br/> Paperback edition, l969. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technological innovations<br/>Labor productivity