Siebert H <br/><br/>
Trade and environment   A theoretical enquiry      
Siebert H; Eichberger J 
 -  1980 
<br/><br/><label>Standard No.: </label>4721 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X:54:(G:55), M0