Sardón de Duero
Sardón de Duero is a municipality in the province of Valladolid, Castile and León, Spain. According to the 2004 census (INE), the municipality has a population of 668 inhabitants. There is a factory producing mantecadas in Sardón de Duero, as well as the Monastery of Santa María de Retuerta.
41°36′N 4°26′W / 41.600°N 4.433°W
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- ^ Municipal Register of Spain 2018. National Statistics Institute.