Work systems and the methods, measurement, and management of work 2026-02-15T10:32:12+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Groover, Mikell P., 1939- (Pearson Prentice Hall, 2007)