Netherlands, Ministry of Cultural Affairs, Recreation and Social Welfare

Environmental education in an urban society : proceedings of the ninth Regional Conference of the North-West Europe Committee, Commission on Education, IUCN, held at Rotterdam, Netherlands, 30 August - 5 September 1971

1972 Goudswaard, J. |

Environmental education in a coastal habitat : proceedings of the 13th Regional Conference of the North West Europe Committee, Commission on Education , IUCN, Texel, NL, 21-26 August 1978

1980
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