A study in troop frontage ... 
Prepared in the Historical Branch, War Plans Division, General Staff. December, 1919. 
 - Washington,  Govt. Print. Off.,  1920. 
 - 23 p.  23 cm. 
 - Its Monograph,  no. 4 War Dept. Document  no. 992. Office of the Adjutant General .
 - United States.  War Department.  General Staff.  Monograph,  no. 4. .
<br/><br/>"Statement of works, documents, and persons consulted (in order of citation)": p. 23. 
<br/><br/><label>LCCN: </label>war20000026  
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States. Army.  American Expeditionary Forces. 
<br/><br/><label>LC Class. No.: </label>U167  / .U6 1919