Walford´s guide to reference material / 
edited by A.J. Walford, Anthony P. Harveyand H. Drubba 
 - x, 697 p. :  il. ;  25 cm. 
<br/><br/><label>ISBN: </label>0853656118 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBROS DE CONSULTA--BIBLIOGRAFIAS
<br/><br/><label>Dewey Class. No.: </label>C 011.02  / W34