道総研 · broad-leaved trees native to the island, i. e. Dake-birch (Betula ermanð,...
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道総研 · broad-leaved trees native to the island, i. e. Dake-birch (Betula ermanð, Miyama-alder (Alnus maximowiczii), Nagaba-willow (Salix sachalinensis), Japan poplar (Populus