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Untersuchungen
divorced and moved back to Britain
ministries of foreign affairs
Die Städte hochentwickelter Industriestaaten stehen heute vor neuen Aufgaben und Zielen
Advances in Soil Science Daniel W UntersuchungenThe world population in 1930 was 2 billion. It reached 3 billion in 1960, stands at 4. 6 billion today, and is expected to reach 6 billion by the end of the century. The food and fiber needs of such a rapidly increasing population are enormous. One of the most basic resources, perhaps the most basic of all, for meeting these needs is the soil. There is an urgent need to improve and protect this resource on which the future of mankind directly depends.