Drug abuse -- European Union countries -- Prevention -- Periodicals Drug abuse -- European Union countries -- Periodicals

油畫 作品集 俄羅斯

環境保護 -- 澳門 空氣污染 -- 澳門

Proteccao do ambiente Natureza Poluicao sonora Poluicao de ar Poluicao do ambiente

Minorities -- Government policy -- China -- Guangxi Zhuangzu Zizhiqu -- History China -- Territorial expansion Guangxi Zhuangzu Zizhiqu (China) -- Ethnic relations -- History

Drug abuse -- Europe, Eastern -- Prevention -- Periodicals Drug abuse -- Europe, Central -- Prevention -- Periodicals Drug abuse -- International cooperation -- Prevention -- Periodicals

標目主體 -- 主題複分 -- 地區複分 -- 時代複分

Protecção do ambiente Natureza Poluição sonora Poluição do ar Poluição do ambiente

資訊安全 密碼學

領導論 軍事 -- 行政 -- 美國

Ambassadors' spouses -- China -- Interviews China -- Foreign relations -- Anecdotes