Developmental systems and languages.: G.
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P. Van Remoortere
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Article
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1979
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Elsevier Science
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English
โ 94 KB
Water is probably the most vital of all our natural resources. In the developing countries, either too much with inadequate control, or too little can effectively curb socio-economic development. In the industrialized areas of the world, the tremendous cost of purifying polluted water for human cons