1. Polychlorinated biphenyl congeners in Foxes in Germany from 1983 to 1991

   • S. Georgii
   • Gh. Bachour
   • H. Brunn

   OriginalPaper Pages: 1 - 6

2. Inter- and intra-annual variation in the occurrence of organochlorine pesticides, polychlorinated biphenyl congeners, and mercury in the eggs of a river passerine

   • S. J. Ormerod
   • S. J. Tyler

   OriginalPaper Pages: 7 - 12

3. Congener-specific analysis of polychlorinated biphenyls in white-tailed sea eagles Haliaeetus albicilla collected in Poland

   • J. Falandysz
   • N. Yamashita
   • B. Jakuczun

   OriginalPaper Pages: 13 - 22

4. Effects of dietary exposure to forest pesticides on the brown garden snail Helix aspersa Müller

   • G. S. Schuytema
   • A. V. Nebeker
   • W. L. Griffis

   OriginalPaper Pages: 23 - 28

5. Effects of dieldrin in food on growth and bioaccumulation in mallard ducklings

   • A. V. Nebeker
   • K. D. Dunn
   • G. S. Schuytema

   OriginalPaper Pages: 29 - 32

6. Toxicity and estimated water quality criteria values in mallard ducklings exposed to pentachlorophenol

   • A. V. Nebeker
   • W. L. Griffis
   • G. S. Schuytema

   OriginalPaper Pages: 33 - 36

7. Evaluation of methods for monitoring the potential exposure of small children to pesticides in the residential environment

   • R. G. Lewis
   • R. C. Fortmann
   • D. E. Camann

   OriginalPaper Pages: 37 - 46

8. Non-occupational exposures to pesticides for residents of two U.S. cities

   • R. W. Whitmore
   • F. W. Immerman
   • J. L. Schaum

   OriginalPaper Pages: 47 - 59

9. The genotoxic and cytotoxic activities of inorganic fluoride in cultured rat bone marrow cells

   • A. M. Khalil
   • A. A. Da'dara

   OriginalPaper Pages: 60 - 63

10. Evaluation of the protective activity of 2,3-dimercaptopropanol and sodium 2,3-dimercaptopropane-1-sulfonate on methylmercury-induced developmental toxicity in mice

    • M. Gomez
    • D. J. Sanchez
    • J. Corbella

    OriginalPaper Pages: 64 - 68

11. Comparative acute toxicity of the first 50 Multicentre Evaluation of In Vitro Cytotoxicity chemicals to aquatic non-vertebrates

    • M. C. Calleja
    • G. Persoone
    • P. Geladi

    OriginalPaper Pages: 69 - 78

12. Assessment of chemical contaminants in water and sediment samples from Degh Nala in the province of Punjab, Pakistan

    • W. M. Tehseen
    • L. G. Hansen
    • M. Hanif

    OriginalPaper Pages: 79 - 89

13. Effect of Beauveria bassiana and its toxins on Mysidopsis bahia (mysidacea)

    • F. J. Genthner
    • G. M. Cripe
    • D. J. Crosby

    OriginalPaper Pages: 90 - 94

14. Histopathology in winter flounder (Pleuronectes americanus) living adjacent to a pulp and paper mill

    • R. A. Khan
    • D. E. Barker
    • K. Nag

    OriginalPaper Pages: 95 - 102

15. Effects of contaminants from chromated copper arsenate-treated lumber on benthos

    • J. S. Weis
    • P. Weis

    OriginalPaper Pages: 103 - 109

16. Influence of age on the relative sensitivity of Hyalella azteca to diazinon, alkylphenol ethoxylates, copper, cadmium, and zinc

    • S. A. Collyard
    • G. T. Ankley
    • T. Goldenstein

    OriginalPaper Pages: 110 - 113

17. An insect model for assessing mercury toxicity: Effect of mercury on antioxidant enzyme activities of the housefly (Musca domestica) and the cabbage looper moth (Trichoplusia ni)

    • K. Zaman
    • R. S. MacGill
    • R. S. Pardini

    OriginalPaper Pages: 114 - 118

18. Necrosis of trout retina (Oncorhynchus mykiss) after sublethal exposure to nitrite

    • R. Hofer
    • E. Gatumu

    OriginalPaper Pages: 119 - 123

19. Influence of exposure duration on the toxicity of triclopyr ester to fish and aquatic insects

    • D. P. Kreutzweiser
    • S. B. Holmes
    • D. C. Eichenberg

    OriginalPaper Pages: 124 - 129

20. Letter to the editor

    • L. C. Duffy
    • P. Cole
    • S. H. Lamm

    Letter Pages: 130 - 131

21. Authors' reply

    • J. R. Davis
    • R. C. Brownson

    Letter Pages: 132 - 133

22. Announcements

    Announcement Pages: 134 - 134