Name the two coastal oil-refineries, one on the west coast of India and the other on the east coast of India. Name one inland oil refinery. List the sources of crude oil for these refineries.

Below are the oil-refineries along with their location and source of crude oil:

1. Oil refinery — Trombay refinery in Maharashtra
   Location — West coast of India
   Source of crude oil — Ankleshwar fields
2. Oil refinery — Visakhapatnam Refinery in Andhra Pradesh
   Location — East coast of India
   Source of crude oil — Tatipaka field
3. Oil refinery — Mathura refinery in Uttar Pradesh
   Location — Inland oil refinery
   Source of crude oil — Mumbai High