Free-Floating subdivision: an alphabetical index / 
prepared be Subject Cataloging Division 
 - 3rd edition 
 - Washington D.C :  Library of Congress Washington,   1991 
 - 213 tr. ;   28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subject heading subdivisions, -- Indexes. <br/>Phân nhóm tiêu đề chủ đề, -- Chỉ mục.
<br/><br/><label>Dewey Class. No.: </label>025.49  / F853