Columbia subject headings:
Documentation--Periodicals.
Information storage and retrieval systems--Science--Periodicals.
Machine translating--Periodicals.
Harvard subject headings:
Documentation--Periodicals
Information storage and retrieval systems--Science--Periodicals.
Machine translating--Periodicals.
Periodicals
Princeton subject headings:
Documentation--Periodicals.
Information storage and retrieval systems--Science--Periodicals.
Machine translating--Periodicals.
Periodicals.