Mosses of Pisa and Koli Nature Reserves, Finland

Including articles: T. Koponen, Mosses collected from Koli, North Karelia, Finland by T. Koponen in 1964; habitats substrates, an estimation of frequencies and conservation; T. Koponen and T. Ulvinen, Mosses collected in Pisa Strict Nature Reserve in northern Finland by Aune and Timo Koponen in 1964-66; habitats, substrates, an estimation of frequencies and conservation.