Walford, A. J. <br/><br/>
Walford's guide to reference material 

 - 4 ed. 
 - London :  The Library Association,  1980 
 - v. 
<br/><br/> La biblioteca tiene: v.1 Science & Technology 
<br/><br/><label>LCCN: </label>51085 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Obras de consulta--Bibliografía.
<br/><br/><label>Dewey Class. No.: </label>028.7  / W3 1980