Unemployment and technical innovation : a study of long waves and economic development 2026-02-15T23:18:00+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Freeman, Christopher; Clark, John, 1946; Soete, Luc (Greenwood Press, 1982)