Kievnauchfilm

Background
Kievnauchfilm (Russian: Киевнаучфильм, Ukrainian: Київнаукфільм (Kyïvnaukfil′m), sometimes translated as Kiev Science Film) was a film studio in the former Soviet Union located in Kiev, Ukrainian SSR, established in 1941.

(1941-1990)
Logo: On a background we see the text "Киевская киностудия научно-популярных фильмов". Sometimes, below the text, there's year, and also here's a variant with the text followed by box, with merged 2 boys and pencil inside.

Variants: Like Studio Ekran, there's a lot of variants, especially with merged boys in the box.

FX/SFX: None.

Music/Sounds: None or the opening theme.

Availability: Fairly common. A famous source to have this logo is the "Doctor Dollitle" (Доктор Айболит) series. Seen on many cartoons.

Editor's Note: None.