Proud 640 1950
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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.
- Released: Dec 31, 1950
- Runtime: 1h 42min
- Genre: Documentary
- Stars: N/A
- Director: Oldřich Mirad
- Production: Studio populárně vědeckých a naučných filmů Gottwaldov
