Columbia subject headings:
Harvard subject headings:
Fleck, Ludwik, 1896-1961--Congresses.
Knowledge, Sociology of--Congresses.
Science--Social aspects--Congresses
Princeton subject headings:
Fleck, Ludwik, 1896-1961--Criticism and interpretation--Congresses.
Medicine--Philosophy--Congresses.
Science--Philosophy--Congresses.