Columbia subject headings:
Part-time farming--Germany (West)
Part-time farming--Japan.
Part-time farming--Norway.
Part-time farming--United States.
Harvard subject headings:
Part-time farming--Germany (West)
Part-time farming--Japan.
Part-time farming--Norway.
Part-time farming--United States.
Princeton subject headings:
Part-time farming--Germany (West).
Part-time farming--Japan.
Part-time farming--Norway.
Part-time farming--United States.