000			003660000a22001450004500
245			_aChemistry and unit operations in sewage treatment
100			_aBarnes, D.
100			_aWilson, F.
260			_aLondon _bApplied Science Publishers _c1978
300			_axiii, 350p. : ill.
020			_a0853347832
080			_a628.3 _bB3
041			_aEN
942			_cBK
999			_c115978 _d115978