Columbia subject headings:
Molecular cloning--Technique--Periodicals.
Molecular genetics--Technique--Periodicals.
Nucleic acids--Analysis--Periodicals.
Harvard subject headings:
Genetic engineering--Periodicals.
Genetics--Periodicals
Princeton subject headings:
Genetic engineering--Periodicals.
Genetics--Periodicals.
Molecular cloning--Periodicals.
Nucleic acids--Analysis--Periodicals.
Periodicals.