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Type: stamp Issuer: Nicaragua Date: 1971 Denom: ?
Visibility: public Image owner: none postage 5/15/1971 30c multi issue=Physical Laws and Mathematical Formulas d=Pythagoras unwmk Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/images/b/2579/650/Pythagorean-theorem.jpg Uploaded May 29, 2015, 2:46 pm by Stan Shebs |