Original sentence: On the other sides of the Greek borders the same process of replacing replacing Greek and Turkish place names occurred.Poulton cites two sources, the "detailed" Todor Simovksi, a Yugoslavian writer, who puts the total population at slightly more than one million people, of which more than 360,000 were Slavic Macedonians and just over 250,000 were Greeks
Edited sentence: On the other sides of the Greek borders the same process of replacing non Slavic place names occurred.Poulton cites two sources, the "detailed" Todor Simovksi, a Yugoslavian writer, who puts the total population at slightly more than one million people, of which more than 360,000 were [Slavic] Macedonians and just over 250,000 were Greeks