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| Language | Finnish | 
|---|---|
| Genre | Encyclopedia | 
| Publisher | Tietosanakirja Oy WSOY | 
| Publication date | 1969–2011 | 
| Publication place | Finland | 
Facta is an encyclopedia in Finnish. It was published as a series of 11 volumes with more than 150,000 entries between 1969 and 1974. It describes subjects from a Finnish point of view. It was run by editors in chief Veli Valpola and Maija Numminen and published by Tietosanakirja Oy. [1]
Facta was followed in the 1980s–2000s by the Facta 2001 series with additional volumes, the 22 volumes of which contain approximately 100,000 search terms. [2] The Facta 2001 book series has also been published in digital editions, including the encyclopedia CD-Facta (1994) published on CD-ROM. [2] Finally, Facta (whose last volume was completed in 2007) lived on as an Internet service for several years, but it was discontinued at the end of 2011 as unprofitable. [3]