Columbia subject headings:
Agricultural extension work--Congresses.
Agricultural productivity--Congresses.
Agricultural systems--Research--Congresses.
Farms, Small--Congresses.
Women in agriculture--Congresses.
Harvard subject headings:
Agricultural extension work--Congresses.
Agricultural productivity--Congresses.
Agricultural systems--Research--Congresses.
Farms, Small--Congresses.
Women in agriculture--Congresses.
Princeton subject headings:
Agricultural extension work--Congresses.
Agricultural productivity--Congresses.
Agricultural systems--Research--Congresses.
Farms, Small--Congresses.
Women in agriculture--Congresses.