Tietueen sitaatit

Committee on the Geographic Foundation for Agenda 21, C. o. G., Board on Earth Sciences and Resources, Committee on Geography, Committee on the Geographic Foundation for Agenda 21, Division on Earth and Life Studies, Mapping Science Committee, & National Academy of Sciences. (2002). Down to Earth: Geographical Information for Sustainable Development in Africa. National Academies Press.

Committee on the Geographic Foundation for Agenda 21, Committee on Geography, Board on Earth Sciences and Resources, Committee on Geography, Committee on the Geographic Foundation for Agenda 21, Division on Earth and Life Studies, Mapping Science Committee, ja National Academy of Sciences. Down to Earth: Geographical Information for Sustainable Development in Africa. National Academies Press, 2002.

Committee on the Geographic Foundation for Agenda 21, Committee on Geography, et al. Down to Earth: Geographical Information for Sustainable Development in Africa. National Academies Press, 2002.

Committee on the Geographic Foundation for Agenda 21, C. o. G., Board on Earth Sciences and Resources, Committee on Geography, Committee on the Geographic Foundation for Agenda 21, Division on Earth and Life Studies, Mapping Science Committee & National Academy of Sciences. 2002. Down to Earth: Geographical Information for Sustainable Development in Africa. National Academies Press.