admixture (impurity, deposit)

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petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… … Universalium
Sapphire — For other uses, see Sapphire (disambiguation). Sapphire The 423 carat (85 g) blue Logan sapphire General Category Oxide mineral … Wikipedia
Arabian horse — Infobox Horse name= Arabian horse status = DOM image caption= An Arabian Mare altname= Arabian, Arab country= Developed in the Middle East, most notably Arabian peninsula group1= Arabian Horse Association (AHA) (United States) group2=The Arabian… … Wikipedia
COMMANDMENTS, THE 613 — (Heb. תַּרְיַ״ג מִצְווֹת, taryag mitzvot). The total number of biblical commandments (precepts and prohibitions) is given in rabbinic tradition as 613. R. Simlai, a Palestinian teacher, states: 613 commandments were revealed to Moses at Sinai,… … Encyclopedia of Judaism

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