Proud 640
Movie| Title | Proud 640 |
| User score | 0 |
| Release date | Dec 31, 1950 |
| Genre | Documentary |
| Director | Oldřich Mirad |
| Production country | Czechoslovakia |
| Production companies | Studio populárně vědeckých a naučných filmů Gottwaldov |
A picture of the new step-by-step process of building construction called "flow 640", which ensures optimal continuity of the individual professional parts of building construction.