The control of eutrophication of lakes and reservoirs
edited by Sven-Olof Ryding and Walter Rast ; with the assistance of Dietrich Uhlmann, Jürgen Clasen, Laszlo Somlyódy ; : Parthenon : us, : Parthenon : uk, : UNESCO. -- UNESCO, 1989. -- (Man and the biosphere series ; v. 1).
(画像取得中)
(画像なし)