TransliterationBerngard V.R. Konvolyut: Arki i svody. Rukovodstvo k ustroystvu i raschetu arochnykh i svodchatykh perekrytiy.
In EnglishBernhard V.R. Convolute: Arches and Arches. Guide to the design and calculation of arched and vaulted ceilings. In Russian
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