1. 1
   Effects of tree species and nutrient application on distribution and budgets of base cations in Swedish forest ecosystems

   由 Eriksson, Hillevi M.
   出版 1996

   Uppsala : Swedish University of Agricultural Sciences, 1996.

   1 v. (various pagings) : ill., map ; 24 cm.

   主題: “...Forest ecology Sweden....”
   

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2. 2
   Soil genesis, classification, and nitrogen cycling in forest ecosystems of the northwestern Rif region of Morocco

   由 Ben Jelloun, Hassane
   出版 1993

   1993.

   249 leaves, bound. : ill., map ; 29 cm.

   主題: “...Forest ecology Morocco Rif Mountains....”
   

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