Columbia subject headings:
Book industries and trade--Brazil--History--20th century.
Câmara Brasileira do Livro--History.
Publishers and publishing--Brazil--History--20th century.
Harvard subject headings:
Book industries and trade--Brazil--History--20th century.
Câmara Brasileira do Livro--History.
Publishers and publishing--Brazil--History--20th century.
Princeton subject headings: