Columbia subject headings:
Harvard subject headings:
Businesspeople--Germany--Biography.
Entrepreneurship--Germany--History.
Industrialists--Germany--Biography
Petroleum industry and trade--Germany--History.
Philanthropists--Germany--Biography.
Siemers, Edmund J. A., 1840-1918.
Princeton subject headings:
Businesspeople--Germany--Biography.
Entrepreneurship--Germany--History.
Industrialists--Germany--Biography.
Petroleum industry and trade--Germany--History.
Philanthropists--Germany--Biography.
Siemers, Edmund, 1840-1918.