Columbia subject headings:
Industrial microbiology--Patents--Congresses.
Microorganisms--Patents--Congresses.
Recombinant DNA--Patents--Congresses.
Harvard subject headings:
Biotechnology--Patents--Congresses.
Microorganisms--Patents--Congresses.
Recombinant DNA--Patents--Congresses.
Princeton subject headings:
Industrial microbiology--Patents--Congresses.
Microorganisms--Patents--Congresses.
Recombinant DNA--Patents--Congresses.