Hoage, Alethis Annette Lewis <br/><br/>
The library of Congress Classification in the United States :  A survey of opinions and practices, with attention to problems of structure and application 

 -  Columbia University,  1961 
 - 233 
<br/><br/>Doctor of Library Science 
<br/><br/><label>Subjects--Index Terms: </label>Clasificación de la Biblioteca del Congreso