1. A comparison of the fate and effects of two pyrethroid insecticides (lambda-cyhalothrin and cypermethrin) in pond mesocosms

   • Deborah Farmer
   • Ian R. Hill
   • Stephen J. Maund

   Paper Pages: 219 - 244

2. Chironomids fail to emerge from LAS-contaminated water

   • Kenzi Takamura

   Paper Pages: 245 - 257

3. Organochlorine residues in bat guano from nine Mexican caves, 1991

   • Donald R. Clark Jr
   • Arnulfo Moreno-Valdez
   • Miguel A. Mora

   Paper Pages: 258 - 265

4. Joint action of combinations of pollutants on the acetylcholinesterase activity of several marine species

   • Gilles Bocquené
   • Christelle Bellanger
   • François Galgani

   Paper Pages: 266 - 279