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In Russia:
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Adentina Tour
103688, Moscow
Ulitsa Varvarka, 14, Office 308
Tel: (7-095) 298-4737
Tel: (7-095) 298-3863
Fax: (7-095) 298-3801
Email: adentina@mtu-net.ru
Though they don't have a web site, Adentina does a reliable job with visas for Russia and most CIS countries.