BECKMANN, P. Structural Aspects Of Building Conservation Poul Backmann. s.n.
Lua i Stíl Chicago (17ú heag.)BECKMANN, Poul. Structural Aspects Of Building Conservation Poul Backmann. s.n.
Lua MLA (8ú heag.)BECKMANN, Poul. Structural Aspects Of Building Conservation Poul Backmann. s.n.
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