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瑞士的林业概况罗菊春（北京林业大学森林资源与环境学院）１９９２年９月，“全球亚高山五针松及其环境”国际学术讨论会（ＩｎｔｅｒｎａｔｉｏｎａｌＷｏｒｋｓｈｏｐｏｎＳｕｂａｌｐｉｎｅＳｔｏｎｅＰｉｎｅｓａｎｄＴｈｅｉｒＥｎｖｉｒｏｎｍｅｎｔ）在瑞士南部高...
Forestry in Switzerland Luo Juchun (College of Forest Resources and Environment, Beijing Forestry University) In September 1992, “International Workshop on Subalpine Stones Pines and the Environment” held in southern Switzerland ...