Columbia subject headings:
Electric discharges through gases.
Electric discharges.
Electrochemistry.
Ionization of gases.
Ionization.
Harvard subject headings:
Electric discharges through gases.
Electric discharges.
Electrochemistry.
Ionization of gases.
Ionization.
Princeton subject headings:
Electric discharges through gases.
Electric discharges.
Electrochemistry.
Ionization of gases.
Ionization.