Clearing a maneuvering route along the Belasitsa Mountain

This is the back of F73k_op1_ae2803_v084. Text with pencil: "Clearing a maneuvering route along the Belasitsa Mountain and date." Belasitsa Mountain. 17,5 x 12,3 cm. Bulgarian language. Paper. Dirty. Crushed. Original reference: BOX3; F73k_op1_ae2803_r084.