Columbia subject headings:
Biopolymers--Congresses.
Biotechnology--Congresses.
Genetic engineering--Congresses.
Harvard subject headings:
Biopolymers--Congresses
Biotechnology--Congresses
Genetic engineering--Congresses
Princeton subject headings:
Biopolymers--Congresses.
Biotechnology--Congresses.
Genetic engineering--Congresses.