Hall, James L. <br/><br/>
Online bibliographic databases: A directory and sourcebook 
by James L Hall and Marjorie J Brown 
 - 3rd ed. 
 - London  Aslib  1983 
 - xiv, 383p. 
<br/><br/><label>ISBN: </label>0851421679 
<br/><br/><label>Dewey Class. No.: </label>029.73  / N83