Lyuben Obretenov
Lyuben Raykov Obretenov was a Bulgarian gymnast. He competed in Gymnastics at the [1936 Summer Olympics|eight events] at the 1936 Summer Olympics.
Lyuben Raykov Obretenov was a Bulgarian gymnast. He competed in Gymnastics at the [1936 Summer Olympics|eight events] at the 1936 Summer Olympics.