General notions of organization and tactical suggestions indispensable to the balloon observer, 
issued by Division of Military Aeronautics, U.S. Army; information given by French instructors to Army Balloon School, American Expeditionary Forces. 
 - Washington,  Govt. Print. Off.,  1918. 
 - 22 p. ;  18 1/2 cm. 
<br/><br/> Supplemented by:  Supplement to the pamphlet entitled General notions of organization ... indispensable to the balloon observer... Washington, Govt. print. off., 1918.  15 p. tables. 18 cm.  On title page of supplement:  This Supplement is intended to supersede Part 1 of the pamphlet, which is erroneous in that it is not up to date. 
<br/><br/><label>LCCN: </label>war21000061  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Balloons--Tracking.<br/>Aeronautics, Military.<br/>Air warfare.
<br/><br/><label>LC Class. No.: </label>UG643  / .A5 1918b