Harbor boat service regulations.  1917. 

 - Washington,  U.S. Govt. Print. Off.,  1917. 
 - 29 p.  15 x 11 cm. 
<br/><br/> At head of title: United States Army.  On verso of t.-p.: War dept., Document no. 570. 
<br/><br/><label>LCCN: </label>war17000109  
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States. Harbor boat service. 
<br/><br/><label>LC Class. No.: </label>UC323  / .A5 1917