Columbia subject headings:
Knowledge, Sociology of--History--20th century.
Knowledge, Sociology of.
Mannheim, Karl, 1893-1947.
Harvard subject headings:
Knowledge, Sociology of--History--20th century.
Mannheim, Karl, 1893-1947--Contributions in sociology of knowledge.
Princeton subject headings:
Knowledge, Sociology of--History--20th century.
Mannheim, Karl, 1893-1947.