Economec Commission for Europe   Annual Report.    

 - New York  U.N.           1981 
 - iii; 205p.  cm. 
 - Supplement no.13 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>V1N45,93:3.N81 - N80, M1-13