Classification - Class Q :  Science 

 - 5th ed. 
 - Washington :  Library of Congress,  1950 
 - 215 p. ;  27 cm. 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Library of Congress
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification, Library of Congress.
<br/><br/><label>Dewey Class. No.: </label>025.465