Columbia subject headings:
Electric apparatus and appliances--Periodicals.
Enamel and enameling--Periodicals.
Household appliances, Electric--Periodicals.
Household appliances--Periodicals.
Metal products--Periodicals.
Harvard subject headings:
Electric apparatus and appliances--Periodicals
Metal products--Periodicals.
Princeton subject headings:
Electric apparatus and appliances--Periodicals.
Metal products--Periodicals.
Periodicals.