Quốc gia | Tổ chức | |
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Ai-len | Irish Philatelic Traders Association (IPTA) |
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I-xra-en | Israel Philatelic Federation (IPF) |
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Hoa Kỳ | Lighthouse Stamp Society |
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Hoa Kỳ | National Stamp Dealers Association (NSDA) |
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Hà Lan | Nederlandsche Vereeniging Van Postzegelhandelaren (NVPH) |
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Na Uy | Norsk Frimerkehandler Forening (NFHF) |
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Áo | Österreichischer Briefmarken- und Münzen Händlerverband (ÖBMHV) |
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Ma-lay-xi-a | Penang Philatelic Society |
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Internet | Philatelic Webmasters Organization (PWO) |
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Hoa Kỳ | Polonus Polish Philatelic Society |
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Ca-na-đa | Postal History Society of Canada (PHSC) |
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Internet | Railway Philatelic Group |
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Nước Úc | Rhodesian Study Circle |
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Niu Di-lân | The Royal Philatelic Society of New Zealand |
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Thụy Sĩ | Schweizer Briefmarken-Händler-Verband (SBHV) |
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Hoa Kỳ | Scouts On Stamps Society International |
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Hoa Kỳ | Society for Costa Rica Collectors (SOCORICO) |
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Thụy Điển | Sveriges Frimärkshandlareförbund (SFHF) |
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Thụy Sĩ | Universal Postal Union (UPU) |