Inventory of data sources in science and technology :  a preliminary survey. 

 - París :  UNESCO,  1982. 
 - v, 229 p. 
<br/><br/> "Prepared by CODATA for the General Information Programme and UNISIST" 
<br/><br/><label>ISBN: </label>923102048X 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>OC 5: 6. 008: 91 (083.82) =20 INV