Outline of the Library of Congress classification 

 - Washington :  The Library of Congress,  [1948]. 
<br/><br/> Revisited and enlagred edition of "Outline Scheme of Classes" - 1942 [Reprinted 1948] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Βιβλιογραφίες--Βιβλία--Γενικά έργα