About Petrova Niva
Petrova Niva is a historic area in the Strandzha mountains of southeastern Bulgaria where, between 11 and 13 July 1903, a group of Bulgarian Internal Macedonian-Adrianople Revolutionary Organization . . .
Petrova Niva is a historic area in the Strandzha mountains of southeastern Bulgaria where, between 11 and 13 July 1903, a group of Bulgarian Internal Macedonian-Adrianople Revolutionary Organization . . .
