Cast & crew
But Why Is That? (1929)
Directed by Nikolay Dirin, A. Larionov Written by A. Larionov
Cast
| Fyodor Bogdanov | Sector Director |
| Olga Rozevskaya | Zoya Natkin |
| Nikolay Mikhaylov | Ivanov |
| Vladimir Romashkov | Zotov |
| Leonid Ivanov-Rayev | Engineer |
| Nikolay Wildgrube | Aleksey |
Crew
| Boris Khrennikov | Director of Photography |
| Nikolai Suvorov | Production Design |
| Nikolay Dirin | Director |
| A. Larionov | Director |
| A. Larionov | Writer |