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Square tiling
In geometry, the square tiling, square tessellation or square grid is a regular tiling of the Euclidean plane consisting of four squares around every vertex. John Horton Conway called it a quadrill
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Joy Division
Joy Division were an English rock band formed in Salford in 1976. The group consisted of vocalist, guitarist and lyricist Ian Curtis, guitarist and keyboardist Bernard Sumner, bassist Peter Hook an
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Slovak state
Slovakia, officially the (First) Slovak Republic, and from 14 March until 21 July 1939 officially known as the Slovak State (Slovak: Slovenský štát, German: Slowakischer Staat), was a partially-rec
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Working cat
A working cat, also known as a mouser, is a type of domestic cat that "works" for its keep by hunting vermin, such as rodents. They are commonly employed where pest control is needed, such as barns
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Clapping Music
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Turóc County
Turóc (Hungarian, historically also spelled Túrócz), Slovak: Turiec, Latin: Thurotzium/comitatus Thurociensis, German: Turz) was an administrative county (comitatus) of the Kingdom of Hungary. Its
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Puebla Cathedral
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Miller index
Miller indices form a notation system in crystallography for lattice planes in crystal (Bravais) lattices.Planes with different Miller indices in cubic crystalsExamples of directionsIn particular,
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Copernicia prunifera
Copernicia prunifera or the carnaúba palm or carnaubeira palm (Portuguese pronunciation: [kaʁnaˈubɐ] ) is a species of palm tree native to northeastern Brazil (mainly the states of Ceará, Piauí, Ma
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Military operations
A military operation (op) is the coordinated military actions of a state, or a non-state actor, in response to a developing situation. These actions are designed as a military plan to resolve the s
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