1. Photochemical reactivities of gaseous hydrocarbon mixtures

   • Yen V. Nguyen
   • Colin R. Phillips

   OriginalPaper Pages: 3 - 21

2. The sorption of mercury species by clay minerals

   • Helen Farrah
   • William F. Pickering

   OriginalPaper Pages: 23 - 31

3. Effects of nitrogen dioxide on selected soil processes

   • E. A. Smith
   • C. I. Mayfield

   OriginalPaper Pages: 33 - 43

4. Lack of correlation between gas-liquid chromatograph and UV absorption indicators of petroleum pollution in organisms

   • Adam Zsolnay

   OriginalPaper Pages: 45 - 51

5. The effect of chinook weather on urban heat islands and air pollution

   • Lawrence C. Nkemdirim
   • Keith Leggat

   OriginalPaper Pages: 53 - 67

6. Acute effects of wood-pulp on sockeye salmon (Oncorhynchus Nerka)

   • Arthur E. Werner
   • Jack Robinson

   OriginalPaper Pages: 69 - 81

7. Mosses as bioindicators of heavy metal pollution in polish national parks

   • Krystyna Grodzińvska

   OriginalPaper Pages: 83 - 97

8. Multielement X-Ray fluorescence analysis of natural waters by using a preconcentration technique with ion exchange resins

   • R. Cesareo
   • G. E. Gigante

   OriginalPaper Pages: 99 - 111

9. Mercury fallout in Hawaii

   • S. M. Siegel
   • B. Z. Siegel

   OriginalPaper Pages: 113 - 118

10. Tehran ground water pollution by detergents

    • K. Imandel
    • N. Razeghi
    • P. Samar

    OriginalPaper Pages: 119 - 122

11. Book reviews

    • Lucarelli Frank Bart Jr.
    • V. Kovda
    • K. C. Pillai

    BookReview Pages: 123 - 128

12. Announcements

    Announcement Pages: 129 - 131

13. Errata

    Erratum Pages: 133 - 133