Belize
Left b : 1910 sighting, Halley's Comet
Middle c : European probe Giotto
Right a : Japanese probe PLANET-A
(Belize, 1986, SC#812, ensmalled 50%)
Left b : Hubble Space Telescope
Middle c : E. Halley
Right a : oeWeather bureau
(Belize, 1986, SC#813, ensmalled 50%)
E. Halley and computer graphics
(Belize, 1986, SC#814, ensmalled 50%)
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