Szukana fraza: [Abstract = "Arches in such bridges have not yet been constructed in a classical manner, i.e. one that was later prevalent by the Romans, but these were only the primitive arch\-like structures, with a false needle vault, that were shaped mainly by corbelling. This type of the structure, if it was used in bridges, turned out to be much more stable than the well\-known at that time and commonly used in gateway passages oval \"true\-arch\" built from sun\-dried mud bricks."]

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