Title: Radiotelegrafia i radiowywiad
Subtitle: 1939-1946
First published: 2003
Subjects: World War, 1939-1945, Cryptography, History, Poland. Polskie Siły Zbrojne. Armia Krajowa, Communications, Underground movements, Electronic intelligence, Poland
Places: Poland
Time periods: 20th century, Occupation, 1939-1945