000			00524nam a22001577a 4500
008			230613b |||||||| |||| 00| 0 eng d
020			_a090303123X
040			_aNational Science Library _cNational Science Library
080			_a628.16 _bL6
100			_aMann, H T _911546
245			_aWater treatment and sanitation: _bA handbook of simple methods for rural areas in developing countries
260			_aLondon: _bIntermediate Technology Publications, _c1976
300			_a90p.
650			_aScience
942			_2udc _cHDK
999			_c42630 _d42630