Demographic techniques 2026-02-16T18:36:35+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Pollard, Alfred Hurlstone, 1916-; Pollard, G. N; Yusuf, Farhat (Pergamon Press, 1975)