1. Determination of cerium in marine sediments

   • M. D. Borkar

   OriginalPaper Pages: 133 - 141

2. Air pollution in Montreal: A statistical analysis of sulphur dioxide data

   • R. Cléroux
   • R. Roy
   • N. Fortin

   OriginalPaper Pages: 143 - 156

3. An examination of temporal/spatial variations in landfill-generated methane gas

   • E. A. McBean
   • G. J. Farquhar

   OriginalPaper Pages: 157 - 172

4. Air pollution levels: Difficulties of assessment of area values and trends

   • A. Henderson-Sellers

   OriginalPaper Pages: 173 - 186

5. Occurrence of salt and lead in snow dump sites

   • William S. Scott

   OriginalPaper Pages: 187 - 195

6. Comparison between colorimetric and electrometric methods for chlorine and its derivative compounds

   • Giovanni Piccardi
   • Emilia Barbolani
   • Francesco Pantani

   OriginalPaper Pages: 197 - 205

7. The temporal variations of lead concentration in a freshwater lake

   • James E. Byrd
   • Michael J. Perona

   OriginalPaper Pages: 207 - 220

8. Reduction of mercury pollution in the vicinity of a caustic soda plant in Thailand

   • Saroj Suckcharoen
   • Martin Lodenius

   OriginalPaper Pages: 221 - 227

9. Effects of the pesticides thiotox, dichlorvos and carbofuran on the test fishMystus vittatus

   • S. R. Verma
   • Sarita Rani
   • R. C. Dalela

   OriginalPaper Pages: 229 - 234

10. Draft, construction and operation of a sequential rain sampler

    • Willem A. H. Asman

    OriginalPaper Pages: 235 - 245

11. Effect of Kaolin concentration on distribution coefficient of copper

    • Gian C. Gupta
    • Florence L. Harrison

    OriginalPaper Pages: 247 - 250

12. Degradation treatment of waste water from olive processing

    • Mario Della Monica
    • A. Agostiano
    • M. Volpicella

    OriginalPaper Pages: 251 - 256

13. Book reviews

    • T. Viraraghavan

    BookReview Pages: 257 - 262

14. Announcements

    Announcement Pages: 263 - 264