the 2 great geographic areas: the Northern Platform (9 papers) and the Southern
Platform (4 papers). 4 papers concern stratigraphy and correlation problems
in Ukraine and Russia from the upper Carboniferous to Jurassic. 3 articles on
paleostress problems of the Crimea-Caucasus and Moesia. 2 papers on tectonic
history of Scythian platform and Black Sea region. The 4 papers on the Southern
platform deal with Algeria, Eritrea and Tunisia.