PL122797B2 - Method of erectirg buildings of circular or polygonal shape in plane and of spiral cross-section using the in site concrete casting technique
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Method of erectirg buildings of circular or polygonal shape in plane and of spiral cross-section using the in site concrete casting technique
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PL22605080A1980-08-021980-08-02Method of erectirg buildings of circular or polygonal shape in plane and of spiral cross-section using the in site concrete casting technique
PL122797B2
(en)