Columbia subject headings:
Electromagnetic fields--History.
Electromagnetic theory--History.
Electromagnetic theory.
Maxwell, James Clerk, 1831-1879.
Physics--History.
Harvard subject headings:
Electromagnetic fields--History.
Electromagnetic fields.
Electromagnetic theory--History.
Electromagnetic theory.
Maxwell, James Clerk, 1831-1879
Maxwell, James Clerk, 1831-1879--Contributions in electromagnetic theory.
Physics--History.
Princeton subject headings:
Electromagnetic fields.
Maxwell, James Clerk, 1831-1879.