1. Trace element concentrations in tropical marine fish at Bougainville Island, Papua New Guinea

   • J. H. Powell
   • R. E. Powell
   • D. R. Fielder

   OriginalPaper Pages: 143 - 158

2. Meteorological interpretation of the chemical composition of rain-water at one measuring site

   • Willem A. H. Asman
   • Jakob Slanina
   • Jan H. Baard

   OriginalPaper Pages: 159 - 175

3. Sulphur and nitrogen nutrition and misting effects on the response of bluegrass to ozone, sulphur dioxide, nitrogen dioxide or their mixture

   • T. Elkiey
   • D. P. Ormrod

   OriginalPaper Pages: 177 - 186

4. Zinc in seawater and sediments of the Gulf of Elefsis, Greece

   • Michael J. Scoullos

   OriginalPaper Pages: 187 - 207

5. The effect of pH on the retention of Cu, Pb, Cd, and Zn by clay-fulvic acid mixtures

   • Janece Slavek
   • William F. Pickering

   OriginalPaper Pages: 209 - 221

6. Deposition of sulphur gases from multiple scattered sources in Alberta

   • D. R. Walker
   • A. C. Dick
   • M. Nyborg

   OriginalPaper Pages: 223 - 231

7. Repeated exposure ofEscherichia coli to free chlorine: Production of strains possessing altered sensitivity

   • Charles N. Haas
   • Elizabeth C. Morrison

   OriginalPaper Pages: 233 - 242

8. The natural acidity of some unpolluted waters in southeastern Alaska and potential impacts of acid rain

   • Dale W. Johnson

   OriginalPaper Pages: 243 - 252

9. The mercury cycle

   • Cyrill Brosset

   BriefCommunication Pages: 253 - 255

10. Book reviews

    • Elmer Robinson
    • Luis F. Diaz
    • T. Viraraghavan

    BookReview Pages: 257 - 262

11. Announcements

    Announcement Pages: 263 - 264