Emissions of methane (CH4) in the Catalan agro-food subsystem: An alternative input-output analysis Francisco Navarro | Vicent Alcántara | Show more Francisco Navarro Spain Universidad Autónoma de Barcelona Dep. de Economía Aplicada Vicent Alcántara Spain Universidad Autónoma de Barcelona Dep. de Economía Aplicada Submitted: 2016-03-04 | Accepted: | Published: 2011-10-08 DOI: https://doi.org/10.7201/earn.2010.02.02