Columbia subject headings:
Harvard subject headings:
Continuing education--Germany (West)--Case studies.
Continuing education--Hungary--Case studies.
Continuing education--Philippines--Case studies.
Continuing education--United States--Case studies.
Princeton subject headings:
Continuing education--Germany (West)--Case studies.
Continuing education--Hungary--Case studies.
Continuing education--Philippines--Case studies.
Continuing education--United States--Case studies.