 It was published in 2004 by the Finnish Literature Society and to this date is the most extensive of its kind.It is a collaboration written by noted Finnish language scholars Auli Hakulinen, Maria Vilkuna, Riitta Korhonen, Vesa Koivisto, Tarja-Riitta Heinonen and Irja Alho.The 1,698 page book differs from earlier grammars by taking a descriptive approach and describing colloquial Finnish in addition to standard literary Finnish.