Intergovernmental Conference on Environmental Education; Trends, needs and priorities of environmental education since the Tbilisi Conference: an overview; Environmental education series; Vol.:1; 1990  
Intergovernmental Conference on Environmental Education; Trends, needs and priorities of environmental education since the Tbilisi Conference: an overview; Environmental education series; Vol.:1; 1990

Keywords:    environmental education; educational programmes; educational trends; educational cooperation