- the branch of chemistry concerned with the composition and formation of rocks (as distinct from minerals and ore deposits).；the branch of chemistry concerned with petroleum and natural gas, and with their refining and processing.
- the branch of chemistry concerned with the composition and formation of rocks (as distinct from ...
.... Mother served as a financial manager in some large-scale petrochemistry company, mother was quite strict to my lessons while as a child...
...mixture, grain of alcohol, belong to the natural materials, but usually all formated by petrochemistry, is used for acting as and protecting the wet pharmaceutical...
...form of a drug in because the kind belonged to more by products of petrochemistry with nearly have several hundred kinds, this book is different for what ...