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Waterfall Postage stamps of the world - http://www.waterfallstamps.com
Dedicated to the waterfall stamp collectors. Check list of stamps on Waterfall, waterfall stamp information, Waterfall stamp resources, and general information on waterfalls. |
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Reptile-Stamps - http://www.reptile-stamps.de
Collection of Reptile and Amphibian stamps listed by species and country. |
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Sobralia & Stanhopea Orchids on Stamps - http://www.autrevie.com/Sobralia/Sobralia_TheStamps.html
A complete listing of all known Stanhopea and Sobralia orchids on stamps, with photos. |
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Prehistoric life on stamps - http://home.hetnet.nl/~tonveijd/
Prehistoric life forms and fossils on stamps, indexed by species with catalogue numbers |
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Horse Stamps - http://horse-stamps.narod.ru/index-en.html
Unique Collection of Horse Stamps from the World. |