cam a22 u 4500 128725087 CHVBK 20200615043207.0 hz ||||-|||| 880212s1979 xxu |b 10 |eng|d PB-81-156705 EPA-430-9-80-006 (OCoLC)638503990 (NEBIS)000242506 ETH-BIB ger ETH-BIB ETHICS-ISBD Aquaculture systems for wastewater treatment Mikroform seminar proceedings and engineering assessment : seminar held at Davis - Calif., September 11-12, 1979 : technical report prep.: Office of water programs operation - U.S.Environmental protection Agency, Washington Springfield - Va. 1979 5 Microfiches. Konferenzschrift Davis (Calif.) 1979/09 gnd-content BK020800 XK020000 XK020000 1 MF Andere Mikroform = Autre microforme Davis (Calif.) Kongress = Congrès 1979/09 NEBIS E01 E01 RP MIKR: PB81/156705