pääluokkalajittelu
Pääluokkalajittelu is a Finnish term that translates to "main class sorting" or "primary class classification." It refers to a method used in various fields, most notably in biology and library science, to categorize items into broad, fundamental groups. In biological classification, it represents the highest hierarchical ranks, such as kingdom, phylum, class, or order, distinguishing major lineages or groups of organisms. For example, within the animal kingdom, a "pääluokka" might be Mammalia (mammals) or Aves (birds).
In library science and information management, pääluokkalajittelu pertains to the initial and most general division of