Columbia subject headings:
Harvard subject headings:
Phytogeography--Congresses.
Plant communities--Congresses
Plant ecology--Congresses
Plant spores--Congresses.
Plants--Evolution--Congresses
Plants--Migration--Congresses.
Seeds--Dispersal--Congresses.
Vegetation dynamics--Congresses.
Princeton subject headings:
Phytogeography--Congresses.
Plant communities--Congresses.
Plant ecology--Congresses.
Plant spores--Congresses.
Plants--Evolution--Congresses.
Plants--Migration--Congresses.
Seeds--Dispersal--Congresses.