1. Human melioidosis: an emerging medical problem

   • C. J. Smith
   • J. C. Allen
   • G. Ismail

   Review Paper Pages: 343 - 366

2. Nitrogen fixation in some rice soils in Sri Lanka

   • U. Granhall
   • S. A. Kulassoriya
   • T. Lindberg

   Research Papers Pages: 367 - 388

3. Assessment of N₂ fixation in groundnut (Arachis hypogaea L.) and cowpea (Vigna unguiculata L. Walp) and their relative N contribution to a succeeding maize crop in Northern Ghana

   • Felix D. Dakora
   • Roland A. Aboyinga
   • James Apaseku

   Research Papers Pages: 389 - 399

4. Production of ethanol by a flocculentSaccharomyces sp. in a continuous upflow reactor using sucrose, sugar-cane juice, and molasses as the carbon source

   • C. M. Abate
   • D. A. S. Callieri
   • M. de Vié

   Research Papers Pages: 401 - 409

5. Effects of cotyledons and nitrate on the nitrogen assimilation ofPhaseolus vulgaris

   • Mariangela Hungria
   • Richard J. Thomas

   Research Papers Pages: 411 - 419

6. Biochemical changes during composting of kallar grass (Leptochloa fusca L. Kunth)

   • T. Mahmood
   • F. Azam
   • K. A. Malik

   Research Papers Pages: 421 - 428

7. Effect of organic compounds on the microbiological leaching of a complex sulphide ore material

   • Jaakko Puhakka
   • Olli H. Tuovinen

   Research Papers Pages: 429 - 436

8. Announcements

   Announcement Pages: 437 - 441