He then went on to work at the Veliko Turnovo communication center and later on at the postal telegraph service at Gorna Oryahovitsa station .
Raztsvetnikov graduated from the Veliko Turnovo high school in 1916 .
Raztsvetnikov then went on to work at the Veliko Turnovo communication center and later on at the postal telegraph service at Gorna Oryahovitsa station .
Raztsvetnikov graduated from the Veliko Turnovo high school in 1916 .