01176nam0-22003371i-450 99000145492040332120220629111912.00-12-613329-8000145492FED01000145492(Aleph)000145492FED0100014549220010214d1972----km-y0itay50------baengGBa---a---001yyConservation and productivity of natural watersthe 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, 1970edited by R.W. Edwards, D.J. GarrodLondonAcademic Press1972xv, 318 p.ill.25 cmSymposia of the Zoological Society of London29Ecologia marina574.521itaEdwards,R.W.Garrod,D.J.ITUNINARICAUNIMARCBK990001454920403321BSF- 574.5-ZSL-164SC1SC1Conservation and productivity of natural waters373953UNINA