purify paraffin
Смотреть что такое "purify paraffin" в других словарях:
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
Night of the Scorpion — is a poem by Nissim Ezekiel. It tells the story of f boy whose mother was stung by a scorpion, which had retreated underneath a sack of rice. The poem describes the attempts by the boy s father, the local peasants and the holy man to cure her,… … Wikipedia
Psilocybin — Psilocybin … Wikipedia
chemical compound — Introduction any substance composed of identical molecules consisting of atoms (atom) of two or more chemical elements (chemical element). All the matter in the universe is composed of the atoms of more than 100 different chemical elements … Universalium
