Columbia subject headings:
Harvard subject headings:
Mechanical engineers--Germany--Biography.
Reuleaux, F. (Franz), 1829-1905.
Riedler, A. (Alois), 1850-1936.
Technology--Germany--History.
Princeton subject headings:
Mechanical engineers--Germany--Biography.
Reuleaux, F. (Franz), 1829-1905.
Riedler, A. (Alois), 1850-1936.
Technology--Germany--History.