04 februari 2015
Gradus en Dijkgraaf over Europese recyclingdoelstellingen
EU recycling targets workable and worth it - Reactie van Jeremy Wates (Secretary General of European Environmental Bureau) (6 februari 2015)
EU recycling targets are unworkable: the evidence speaks for itself - Reactie van Raymond Gradus (10 februari 2015)
EU recycling targets workable and worth it - Reactie van Jeremy Wates (Secretary General of European Environmental Bureau) (6 februari 2015)
EU recycling targets are unworkable: the evidence speaks for itself - Reactie van Raymond Gradus (10 februari 2015)