Merrill, William Stetson,  1866- <br/><br/>
Code for classifiers :  principles governing the consistent placing of books in a system of classification / 
[by] William Stetson Merrill. 
 - 2d ed. 
 - Chicago :  American library association,  1939. 
 - xi, 177 p. ;  21 cm. 
<br/><br/> Include index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification--Books.
<br/><br/><label>Dewey Class. No.: </label>025.4  / MEC 1939