Columbia subject headings:
Botanical drug industry--Asia, Central--Congresses.
Botanical drug industry--Black Sea Region--Congresses.
Botanical drug industry--Turkey--Congresses.
Medicinal plants--Asia, Central--Congresses.
Medicinal plants--Black Sea Region--Congresses.
Medicinal plants--Turkey--Congresses.
Harvard subject headings:
Princeton subject headings:
Botanical drug industry--Asia, Central--Congresses.
Botanical drug industry--Black Sea Region--Congresses.
Botanical drug industry--Turkey--Congresses.
Medicinal plants--Asia, Central--Congresses.
Medicinal plants--Black Sea Region--Congresses.
Medicinal plants--Turkey--Congresses.