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WorldCat.org

Жизнеописание Льва Семеновича Понтрягина, математика, составленное им самим : рождения 1908, г. Москва

Zhizneopisanie Lʹva Semenovicha Pontri︠a︡gina, matematika, sostavlennoe im samim : rozhdenii︠a︡ 1908, g. Moskva