International encyclopedia of the social sciences. 2026-02-15T20:21:49+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Merton, Robert King, 1910-2003; Sills, David L (Macmillan, 1968)