Orders and regulations, Corps of Engineers, U.S. Army. 

 - Washington,  Govt. Print. Off.,  1917. 
 - 558 p.  fold. forms.  20 cm. 
<br/><br/> War Dept. doc. no. 622. 
<br/><br/><label>LCCN: </label>war17000227  
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States. Army.  Corps of Engineers. 
<br/><br/><label>LC Class. No.: </label>UG23  / .A6 1917