Ponton manual without appendix. 

 - Washington :  Govt. Print. Off.,  1916. 
 - 95 p. :  ill. 
<br/><br/><label>LCCN: </label>war16000149  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pontoon bridges.
<br/><br/><label>LC Class. No.: </label>UG1  / .U5 no. 33