Defense Preparedness of Young People 1981
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Degree of political interest and media usage, solidarity with the GDR, attitudes to military questions, organizations and alliances, personal defense preparedness and...
政治关注度与媒体使用程度、对德意志民主共和国（GDR）的团结态度、军事议题、组织及同盟相关态度、个人防御准备及……
