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090 _aB-2881
245 1 0 _aNutrient cycling in aspen ecosystems
490 0 _vUSDA Forestry Serv. Gen-Tec, p.21-38, 1990
700 1 2 _aPastor, John
856 4 0 _uhttps://drive.google.com/file/d/1sztsLi80SAZmdFEz01KOgMJJuqqSppvM/view?usp=drivesdk
_zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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