1. Changing patterns of weed distribution as a result of herbicide use and other agronomic factors;Haas,1982
2. Report to the Greater Copenhagen Council (Hovedstadsrȧdet) on The Consequences of the Discharge of Pesticide Containing wastewater from Chemical Factory into Køge Bay;Harremoes,1981
3. Response to Report by Harremoes and Arvin (1981) on Consequences of Discharge of Pesticide-Containing Wastewater;Kirt,1982