Keywords: EB1911 Carpentry - Fig. 20 - Method of supporting Centering for Concrete.jpg en Method of supporting Centering for Concrete Encyclopædia Britannica 1911 1911-01-01 Encyclopædia Britannica 1911 Chisholm Hugh ed other versions PD-old-70-1923 1911 Encyclopædia Britannica Carpentry Uploaded with UploadWizard |