Haugen,Einar <br/><br/>
The Ecology of Language 
/ by Einar Haugen 
 - California:  Stanford University Press,   1972. 
 - xiv, 366p.; 
<br/><br/><label>ISBN: </label>0804708029 
<br/><br/><label>Dewey Class. No.: </label>400  / HAU/T