Walford, A.J.  <br/><br/>
Walford's guide to reference material. Vol.1 : science and technology  (Book) 

 - 4th ed. 
 - London  Library Association  1980 
 - 697 p. 24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference books--Bibliography
<br/><br/><label>Universal Decimal Class. No.: </label>03:016:5/6 WAL  / 10107