| http://www.w3.org/ns/prov#value | - cond-generation biofuels: potential and perspectivesSecond-generation biofuels are not yet produced commercially, but a considerable number of pilotand demonstration plants have been announced or set up in recent years, with research activitiestaking place mainly in North America, Europe and a few emerging countries (e.g. Brazil, China, Indiaand Thailand).
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