Russia – RU044A
Composition: Chalk
Orenburg Ryzhik Chalk
Russia – RU032A
Vasilepole Chalk
Russia – RU023A
Noviy Oskol Chalk
Russia – RU021A
Stariy Oskol Chalk
Russia – RU020B
Stariy Oskol Chalk
Russia – RU020A
Suburban Chalk
Russia – RU018A
Sevrukovo Chalk
Russia – RU017A
Schebekensky Chalk
Russia – RU011A
Desnyans’kyi Chalk
Ukraine – UA046A
Petropavlivka Chalk
Ukraine – UA037A
Buturlino Chalk
Ukraine – UA036A
Rai-Oleksandrivka Chalk
Ukraine – UA031A
Putyvs’k Chalk
Ukraine – UA024A
Chernigov Chalk
Ukraine – UA006A
Chernihiv Chalk
Ukraine – UA023A
Divnogorie Chalk
Russia – RU001A