Population 2026-02-16T07:31:30+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Kelsall, R. Keith (Roger Keith), 1910- (Aspects of modern sociology : the social structure of modern Britain, 1975)