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...ls.html|title=Petrochemistry: How does it happen?|publisher=Association of Petrochemical Producers in Europe|date=2006|accessdate=11 April 2012}}</ref> A variety o ===Quality control for petrochemical derivatives===

...research, or industrial analysis such as water quality, pharmaceutical, or petrochemical work. "LIS" has tended to be used to reference informatics systems in the [

...th no fewer than 45 different subdivisions, including glass manufacturing, petrochemical manufacturing, electronics chemicals, ceramics, and dye and pigment manufac