TY  - BOOK
AU  - Schaeffer,  Heinz
TI  - U- Boat  977
U1  - 940.5451 SCHA 
PY  - 1952///
CY  - London
PB  - W.Kimber
KW  - U - 977 (Submarine)
KW  - World War, 1939-1945
KW  - Naval operations
KW  - Submarine
ER  -