World demographic estimates and projections, 1950-2025 : total population, school-age population, economically active population, agricultural and non-agricultural population, urban and rural population a report
| Συλλογικό Έργο: | , |
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| Μορφή: | Βιβλίο |
| Γλώσσα: | English |
| Έκδοση: |
New York
United Nations. Dept. of International Economic and Social Affairs
1988.
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| Θέματα: |