Columbia subject headings:
Pests--Control--Environmental aspects--Congresses.
Pests--Control--Social aspects--Congresses.
Harvard subject headings:
Pests--Control--Environmental aspects--Congresses.
Pests--Control--Social aspects--Congresses.
Princeton subject headings:
Pests--Control--Environmental aspects--Congresses.
Pests--Control--Social aspects--Congresses.