Walfords Guide To Reference Material <br/><br/>
Walfords guide to reference material: vol 1 :science and technology 

 - 6th 
 - London  Library Association Publishing  1996 
 - xii,967p p. 
<br/><br/><label>ISBN: </label>1-85604-165-4 
<br/><br/><label>Subjects--Index Terms: </label>Reference books - Bibliography