Water quality - Determination of biochemical oxygen demand after n days (BOD<(Index)n>) - Part 2: Method for undiluted samples (ISO 5815:1989, modified); German version EN 1899-2:1998
水质.n天后生化需氧量的测定(BOD<(指数)n>)-第2部分:未稀释样品的方法(ISO 5815-1989 修改);德文版EN 1899-2:1998