Richardson, Ernest Cushing <br/><br/>
Classification:  theoretical and practical 

 - New York  H. W. Wilson    1953 
 - xvi, 228 
<br/><br/><label>Subjects--Topical Terms: </label><br/>  Library science<br/>  Classification, study and teaching
<br/><br/><label>Dewey Class. No.: </label>025.42  / R521c