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• Crest (toothpaste) — Crest Tube of Crest Type Toothpaste Owner Procter Gamble Country U.S. Introduced …   Wikipedia

• Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… …   Wikipedia

• Water fluoridation — Fluoridation does not affect the appearance, taste or smell of drinking water.[1] Water fluoridation is the controlled addition of fluoride to a public water supply to reduce tooth decay. Fluoridated water has flu …   Wikipedia

• George Orwell bibliography — George Orwell bibliography Orwell pictured by the National Union of Journalists in 1933 Releases ↙Books 3 …   Wikipedia

• Limestone — For other uses, see Limestone (disambiguation). Limestone Sedimentary Rock Limestone in Waitomo District, New Zealand Composition …   Wikipedia

• Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances …   Wikipedia

• Cumulate rock — Cumulate rocks are igneous rocks formed by the accumulation of crystals from a magma either by settling or floating. Cumulate rocks are named according to their texture; cumulate texture is diagnostic of the conditions of formation of this group… …   Wikipedia

• Alexina Louie — (born 30 July 1949) is a Canadian composer of Chinese descent who has written many pieces for orchestra, as well as pieces for solo piano. BiographyAlexina Louie is one of Canada s most successful living composers. Born in Vancouver in 1949, she… …   Wikipedia

• metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …   Universalium

• Propolis — is a resinous mixture that bees collect from tree buds, sap flows, or other botanical sources. It is used as a sealant for unwanted open spaces in the hive. Propolis is used for small gaps (approximately mm to in|6.35 or less), while larger… …   Wikipedia

• Impressionism — was a 19th century art movement that began as a loose association of Paris based artists exhibiting their art publicly in the 1860s. The name of the movement is derived from the title of a Claude Monet work, Impression, Sunrise (Impression,… …   Wikipedia