Kaufmann, J. E. <br/><br/>
The forts and fortifications of Europe 1815-1945  he neutral sates. 

 - Barnsley  Pen & Sword Military  2014. 
 - 234 p.  ill.  23 cm 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781783463923 
<br/><br/><label>LCCN: </label>893631872 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fortification--Switzerland--19th century.--History<br/>Fortification--Belgium--19th century.--History<br/>Fortification--Netherlands--19th century.--History
<br/><br/><label>LC Class. No.: </label>UG428 .K384  / 2014 
<br/><br/><label>Dewey Class. No.: </label>