1. Changes in biotic conditions and metal deposition in the last millenium as reflected in ombrotrophic peat in Draved Mose, Denmark;Aaby;Dan. Geol. Unders., Årbog 1978,1979
2. Pb-210 dating and lead deposition in the ombrotropic peat bog, Draved Mose, Denmark;Aaby;Dan. Geol. Unders., Årbog 1978,1979
3. U.S. — Canada memorandum on intent on transboundary air pollution, emission, costs and engineering assessment;Anon;Interim Report,1981
4. The impact of mining and smelting on trace metal distribution in lake sediments around Rouyn-Noranda, Quebec;Arafat;Water Pollut. Res. J. Can.,1985