File:640px-OIL SHALE. IT IS THE KEROGEN IN THIS ROCK WHICH WHEN HEATED TO 900 F., YIELDS OIL - NARA - 552547.jpg
640px-OIL_SHALE._IT_IS_THE_KEROGEN_IN_THIS_ROCK_WHICH_WHEN_HEATED_TO_900_F.,_YIELDS_OIL_-_NARA_-_552547.jpg (336 × 301 pixels, file size: 50 KB, MIME type: image/jpeg)
Importing file
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 22:15, 27 August 2015 | 336 × 301 (50 KB) | Maintenance script (talk | contribs) | Importing file |
You cannot overwrite this file.
File usage
The following page uses this file: