LIBROS DEL AUTOR: sankara pitchaiah podila

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  • Sand Mining
    Sankara Pitchaiah Podila
    Sand has become a very important mineral for the expansion of society. In recent years, demand for sand has increased tremendously. Environmental problems occur when the rate of extraction of sand, gravel and other materials exceeds the rate at which natural processes generate these materials. Because of illegal sand mining, it becomes a global problem and threatening human lif...
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    97,22 €