Columbia subject headings:
Steel tube industry--Romania--Bucharest--History--20th century.
Uzina de Tuburi și Oțelării "N. Malaxa"--History.
Uzina de Țevi "Republica" București--History.
Harvard subject headings:
Malaxa, Nicolae, 1884-1965.
Steel industry and trade--Romania--History--20th century.
Steel tube industry--Romania--History--20th century.
Uzina de Tuburi și Oțelării "N. Malaxa"--History.
Uzina de Țevi "Republica" București--History.
Princeton subject headings: