Catalogue of data sources :  annual topic update 1998/ 
prepard by Stefan Jensen 
 - Luxembourg :  Office for Official Publications for de European Comunities,  1999 
 - 22 p. :  chart ;  29 cm. 
 - Topic report,  no.5/1999 .
<br/><br/><label>ISBN: </label>9291671444 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection<br/>Environmental monitoring
<br/><br/><label>Dewey Class. No.: </label>363.70526094