The elements of programming style 2026-02-15T13:58:49+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Kernighan, Brian W.; Plauger, P. J. (McGraw-Hill, 1978)