Yes this link might help. The site is quite a deep well of information. Why I once discussed an obscurity with the site's author, about a track in Northern Africa, Tunisa I think, that does not even exist anymore, last held an international race in the 70's and a single non championship GP in the 50's, a circuit reduced by development. Quite a good site.
http://www.geocities.com/ciroalbertopab ... os_eng.htm