Columbia subject headings:
Abstracts.
Caenorhabditis elegans--Congresses.
Caenorhabditis--Congresses.
Cytogenetics--Congresses.
Nematodes--Congresses.
Harvard subject headings:
Princeton subject headings:
Caenorhabditis elegans--Congresses--Abstracts.
Nematodes--Congresses--Abstracts.