Pengarang: Hong Kong) Jayawardena A. W. (University of Hong Kong

Water is a precious resource essential for all forms of life, and although there is plenty of water to meet the demand for the present population – and even for a projected population of 9 billion – …

Water is a precious resource essential for all forms of life, and although there is plenty of water to meet the demand for the present population – and even for a projected population of 9 billion – …