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3. Archer, E., Baddeley, A., Klein, A., Schwager, J., Whiting, K., 2005. Mechanical Biological Treatment: a guide for decisionmakers. Processes, policies and markets, summary report, Juniper Consultancy Services Ltd.
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5. Biomass Energy Centre, 2007. Short rotation forestry. 〈http://www.biomassenergycentre.org.uk/portal/page?_pageid=75,18093&_dad=portal&_schema=PORTAL〉.