Unterseebootabwehr, England: I 58.712 
Krieg 1914-18 

Grant, Robert M,: U-Boats destroyed. The effec~ 
cf anti-submarine warfsre 1914-1918. 
(Illustro' maps) -Putnam: Landon (1964). 
172 S. 8 , 

Bibliogr.: 3,147-150