00539nam a2200157Ia 4500082002500000100007400025245008900099260002300188300000900211500000500220690000600225952010600231964001700337921001000354999001700364 a614.7720942bG786.SE aGreat Britain and Ireland, Housing and Local Government, Ministry of- aStandards of effluents to rivers with particular reference to industrial effluentsb aLondonbHMSOc1968 a20p. a a  00104070aISIbISId1998-10-12l0o614.7720942 G786.SEpDP7631r2019-02-14 00:00:00w2019-02-14yBK abcdefg a17046 c17046d17046