UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE <br/><br/>
United Nations framework classification for resources   Update 2019    
UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE 
 - Geneva  United Nations           2020 
 - v,20p  cm. 
<br/><br/><label>ISBN: </label>9789211172331 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X9(F55):77.1, R0/UN