Columbia subject headings:
Ampère, André-Marie, 1775-1836.
Electrodynamics--History.
Faraday, Michael, 1791-1867.
Harvard subject headings:
Ampère, André-Marie, 1775-1836.
Electrodynamics--History.
Faraday, Michael, 1791-1867.
Princeton subject headings:
Ampère, André-Marie, 1775-1836.
Electrodynamics--History.
Faraday, Michael, 1791-1867.