00545nam a2200181Ia 4500 0000016282 20251012174746.0 950207s1991 xxu 00 eng 9211165008 (pbk.) 628.166 Rational use of water and its treatment in the chemical industry Economic Comission for Europe New York United Nations 1991 x, 146p. ill. 30 cm. ECE/ CHEM/ 78 Chemicals industry Water purification Water use 10147 10147