Library of Congress.  Classification Division. <br/><br/>
Classification :  Class D : Universal and old world history : European war. D501-725. 

 - 2d ed. as in force August, 1933. 
 - Washington :  Govt. print. off.,  1933. 
 - 36 p.  26 cm. 
<br/><br/> At head of title: Library of Congress.  First edition, 1921, prepared by Alfred F. W. Schmidt. Additions and revisions have been made successively by Dr. Schmidt, Miss Emma A. Runner and Miss L. Belle Voegelein. cf. Pref. signed: Clarence W. Perley, chief of Classification division. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Schmidt, Alfred Francis William, 1873- <br/>Perley, Clarence Warner, 1867-1946. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification--Books--World War, 1914-1918.