1. Is a land quality index possible?

   • Herbert Inhaber

   OriginalPaper Pages: 3 - 26

2. Pyro- and tripoly-phosphate contents of sediments

   • R. W. Blanchar
   • D. C. riego

   OriginalPaper Pages: 27 - 31

3. The kinetics of bacterial degradation of the aquatic weed ‘Hydrilla’ sp.

   • Thomas D. Waite
   • Charles Kurucz

   OriginalPaper Pages: 33 - 43

4. A study of heavy metal contamination in the Rhondda Fawr, South Wales

   • K. W. Burton
   • E. John

   OriginalPaper Pages: 45 - 68

5. Photoreactivity of aqueous anionic NO_x with hydrocarbons part I nitrite-heptane system under strong UV. radiation

   • Gianna L. Petriconi
   • Henry M. Papee
   • Giorgio Cantarelli

   OriginalPaper Pages: 69 - 78

6. An investigation of blood lead content and atmospheric lead levels in Bangkok

   • Maung Nay Htun
   • P. N. Ramachandran

   OriginalPaper Pages: 79 - 93

7. Recovery of aquatic bacterial populations in a stream after cessation of chemical pollution

   • D. S. Cherry
   • R. K. Guthrie
   • R. S. Harvey

   OriginalPaper Pages: 95 - 101

8. Influence of temperature on the performance of septic tank systems

   • T. Viraraghavan

   OriginalPaper Pages: 103 - 110

9. Estimation of natural pollution loads from streamflow measurements in remote catchments

   • Teja Singh
   • Y. P. Kalra

   OriginalPaper Pages: 111 - 116

10. Use of msses as collectors of airborne heavy metals near a smelting complex

    • A. J. Cameron
    • G. Nickless

    OriginalPaper Pages: 117 - 125

11. Book reviews

    • Michael Waldichuk
    • Robert N. Varney

    BookReview Pages: 127 - 133

12. Announcements

    Announcement Pages: 135 - 135