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by UNION PUBLIC SERVICE COMMISSION.
by CANADIAN INSTITUTE OF STEEL CONSTRUCTION.
by AMERICAN INSTITUTE OF STEEL CONSTRUCTION.
by AMERICAN SOCIETY OF CIVIL ENGINEERS.
by PRIEST,H.M.
by CANADIAN INSTITUTION OF STEEL CONSTRUCTION.
by NATIONAL SAFETY COUNCIL.
by ALLEGHENY LUDLVM STEEL CORPORATION.
by ROYAL SOCIETY OF CHEMISTRY.