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Each "article" in this category is in fact a collection of entries about several stamp issuers, presented in alphabetical order. The entries themselves are formulated on the micro model and so provide summary information about all known issuers. See the page for details of the project. == Qatar == Qatar had special treaty relations with Great Britain from 1916 until 3 September 1971, when it became an independent state. British Agency general issues were used at Doha from August 1950 and at Umm Said from February 1956. On 1 April 1957, the agencies issued GB stamps overprinted QATAR. The agencies closed on 23 May 1963 when Qatar began its own service. ;Dates : 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Compendium of postage stamp issuers (Q)」の詳細全文を読む スポンサード リンク
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