Zobrazeno 1 - 1
of 1
pro vyhledávání: '"Patar Dayu Guna"'
Publikováno v:
Energy, Materials and Product Design. 1:1-6
For humans, clean water is a basic need in life. All life activities require water such as for bathing, cooking, washing and drinking. As time goes by and the world's population increases, the supply of clean water is decreasing. Some areas in the so