Hannah Leslie <br/><br/>
Concentration in modern industry    Theory,measurement and the U.K experience      
Hannah Leslie; Kay J A 
 - London  Macmillan Press        1977 
 - xiv,144p  cm. 
<br/><br/><label>Standard No.: </label>29417 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X9.1'N7, L7