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Melhora na resistência (6 Nov 1970 Jahr – 12 Sept 1980 Jahr)

Beschreibung:

Introdução do concreto reforçado com fibras e de concretos de alta resistência.

Zugefügt zum Band der Zeit:

Historia do cimento

9 Nov 2017

0

0

872

Datum:

6 Nov 1970 Jahr

12 Sept 1980 Jahr

~ 9 years and 10 months

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