I seem to have quite a number of unfinished articles on the Railways of Iran. Some are taking longer than others to complete. This is Part 9!
I still have parts 5, 7 and 8 to complete and I hope that there will be at least 3 others to follow.
This post includes two articles from journals in other countries translated for an English audience.
http://rogerfarnworth.com/2020/04/10...s-collection-c