TY  - BOOK
AU  - Lundeberg, Philip K 
TI  - Samuel colt's submarine battery: : The Secret and the enigma
T2  - Smithsonian studies in history and technology 
PY  - 1974///
CY  - Washington: 
PB  - Smithsonian Institution Press, 
KW  - Science
KW  - Enigma
ER  -