TY - BOOK ED - Unesco TI - Dispersion and self-purification of pollutants in surface water systems : : a contribution to the International Hydrological Programme. U1 - 628.162 DIS 1982 PY - 1982/// CY - UK PB - Unesco; KW - Water--Pollution KW - Water--Purification KW - Rivers N1 - Characteristics of river systems; Physical and hydraulic behaviour; Mass nalance equations ER -