European sources of scientific and technical information. 

 - 10th ed. 
 - Harlow, Essex :  Longman,  1993. 
 - vii, 412 p. 
 - Reference on research. .
<br/><br/><label>ISBN: </label>0582101034 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Information services--Directories.<br/>Information services--Directories.--Europe<br/>Technology--Information services--Directories.