Title: Linii͡a︡ Mannergeĭma i sistema finskoĭ dolgovremennoĭ fortifikat͡s︡ii na Karelʹskom peresheĭke
Subjects: Defenses, Fortification, Military History, Military relations, Russo-Finnish War, 1939-1940, Sources
Places: Finland, Karelia (Russia), Karelian Isthmus (Russia), Russia (Federation), Soviet Union
Time periods: 20th century