Short description: In Russian. Usachev, Petr Ivanovich. Materials to the algal flora of the Yenisei River. Krasnoyarsk: Krasnoyarsk, 1928. Materialy k flore vodorosley r. Eniseya. In Russian /Materials for the algae flora of the Yenisei River.. The image is provided for reference only. It may reflect condition of one of the available copies or only help in identifying the edition. Please feel free to contact us for a detailed description of the copies available. SKU9255262