Here is census  with all villages in caucasus and surrounding area with nationalities !

http://www.filefactory.com/file/2p4v3frqxh...3_sp_kavkas.pdf
 
These are links where you can find censuses...
http://king13.ucoz.ru/load/58-here are all former russian gubernias
http://oldbooks.ax3.net/BookLibrary/83000-...nskaya-gub.html
In CROATIA we have great site-forum where we make and collect ethnic maps and censuse so please visit and enjoy with us ----http://www.forum.hr/showthread.php?t=279549