The National Library of Finland is in charge of maintaining three information reserves, Melina, Arto and Juuli.
Melinda is a national metadata reserve, which collects the descriptive metadata of library materials into one place.
ARTO is the reference database and metadata reserve of Finnish periodical and monograph articles. In addition to ARTO's own interface, its data can be searched through Finna and, with the help of interfaces, they can be utilised for publication data collection of higher education institutes, for example.
Juuli publication information portalis meant for browsing and searching publication information of Finnish research organisations. The reference data in Juuli has been collected from the research databases of Finnish higher education institutes.