© 2015 Department of Forest Economics, Swedish University of Agricultural Sciences, Umeå. Published by Elsevier under Atribución-NoComercial-SinDerivadas
Bestelakorik adierazi ezean, itemaren baimena horrela deskribatzen da:© 2015 Department of Forest Economics, Swedish University of Agricultural Sciences, Umeå. Published by Elsevier under Atribución-NoComercial-SinDerivadas