000			00540 a2200121 4500
008			181119b xxu||||| |||| 00| 0 eng d
100			_aR. W. Edwards
245			_aConservation and productivity of natural waters: the proceedings of a symposium organized jointly by the British Ecological Society and the Zoological Society of London, held at the Zoological Society of London on 22 and 23 October, _cR. W. Edwards and D. J. Garrod
260			_aLondon _bAcademic Press _c1972
300			_a318p.
700			_a D. J. Garrod
942			_2ddc _cBK
999			_c7404 _d7404