Toxic apportionment: A causation and risk contribution model Author Boston G.W. Journal/Series Environmental Law | Vol. 25(3); 549 - 649; 51 p. Date 1995 Source IUCN (ID: ANA-056259) Publisher | Place of publication Northwestern School of Law of Lewis and Clark College | Portland, OR, USA Language English Country/Territory United States of America Subject Waste & hazardous substances Keyword Risk assessment/management Environmental cost allocation Hazardous substances