Columbia subject headings:
Agriculture--Congresses.
Food supply--Congresses.
Plant cell culture--Congresses.
Plant genetics--Congresses.
Plant tissue culture--Congresses.
Harvard subject headings:
Agriculture--Congresses
Food supply--Congresses
Plant cell culture--Congresses
Plant genetics--Congresses
Plant tissue culture--Congresses
Princeton subject headings:
Agriculture--Congresses.
Food supply--Congresses.
Plant cell culture--Congresses.
Plant genetics--Congresses.
Plant tissue culture--Congresses.