A preliminary study on an international information system relating to new and renewable energy sources :  item 12 of the provisional agenda 

 - 1 v. (varias aginacoes) 
 - Unesco ; 21 C/INF. 10 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reuniões<br/>Sistemas de recuperação da informação
<br/><br/><label>Universal Decimal Class. No.: </label>025.5(042.3)  / U56p