Erker, Paul. Supplier for Hitler's War: The Continental Group during the Nazi period. — 1 online resource : illustrations. — Originally published in German. — Доступ по паролю из сети Интернет (чтение, печать, копирование). — <URL:https://elib.spbstu.ru/ebsco/epub/3414006.epub>. — Текст: электронный
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