Walford's guide to reference material  Science & technology 

 - 7th ed. 
 - London:   The Library Association,   1996 
 - x, 791p. 
<br/><br/> Vol. 1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Technology 
<br/><br/><label>Universal Decimal Class. No.: </label>D 03(026)  / N6