Stratification : an essay on class and inequality 2026-02-16T01:23:47+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Kelsall, R. Keith (Roger Keith), 1910; Kelsall, Helen M. (Aspects of modern sociology, 1974)