Petroleum: Sources of Crude Oil and Natural Gas
Pakistan & Gulf Economist 2011, July 31, 30, 30
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Publisher Description
Byline: DR. S. M. ALAM Petroleum is a complex mixture of hydrocarbons, whose composition varies according to its place of occurrence. It can occur in solid, liquid, and gaseous state. In the solid form, it is called asphalt, in liquid it is known as crude oil and in gaseous form it is known as natural gas.