Chrisp  J.   LT. CMDR.  <br/><br/>
The tunnelers of Sandbostal / 
by LT. CMDR.  J. Chrisp. 
 - London :  Robert Hale Limited,  c 1959. 
 - 172 p. 
<br/><br/><label>Dewey Class. No.: </label>940.5472