Search for: [References = %2229. IMHOF E.%2C 1900. Die Waldgrenze in der Schweiz%2C Gerlands Beitr. Gerland%27s Beitrage zur Geophysik%2C vol. 4%2C no. 3%2C Leipzig%5C: Engelmann%2C pp. 241%5C-330.%22]

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