Nurmesniemi, Hannu Isolation and Characterization of the Main Constituents of Birch (Betula Verrucosa)Inner Bark - Oulu : University of Oulu, 1983 - A. Scientiae Rerum Naturalium Chemica Nš 153 Chemica Nš 18 . Standard No.: DEX-M1858 Subjects--Topical Terms: CARACTERIZACIONABEDUL Universal Decimal Class. No.: 633.94