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.
Release Date: December 31, 1950
April 13, 2010
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January 01, 1949
December 31, 1950
December 31, 1950
December 31, 1950
December 31, 1950
December 31, 1950
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