Columbia subject headings:
Harvard subject headings:
Plant genetics--Congresses
Plant populations--Congresses.
Plants--Migration--Congresses.
Plants--Variation--Congresses.
Seeds--Dispersal--Congresses.
Princeton subject headings:
Plant genetics--Congresses.
Plant populations--Congresses.
Plants--Migration--Congresses.
Plants--Variation--Congresses.
Seeds--Dispersal--Congresses.