1. The use of 8-hydroxyquinoline for the isolation and prequalification of plant growth-stimulating rhizosphere pseudomonads

   • F. P. Geels
   • E. D. L. Schmidt
   • B. Schippers

   OriginalPaper Pages: 167 - 173

2. Effect of straw, cellulose and lignin on the turnover and availability of labelled ammonium nitrate

   • K. Mengel
   • H. Schmeer

   OriginalPaper Pages: 175 - 181

3. The effect of some carbon substrates on denitrification rates and carbon utilization in soil

   • J. B. de Catanzaro
   • E. G. Beauchamp

   OriginalPaper Pages: 183 - 187

4. Influence of oxygen on denitrification and aerobic respiration in soil

   • L. Kroeckel
   • H. Stolp

   OriginalPaper Pages: 189 - 193

5. A comparison of three earthworm bioassay procedures for the assessment of environmental samples containing hazardous wastes

   • C. A. Callahan
   • L. K. Russell
   • S. A. Peterson

   OriginalPaper Pages: 195 - 200

6. Effect of habitat on decomposition of standard leaf-litter species

   • V. P. Upadhyay
   • U. Pandey
   • J. S. Singh

   OriginalPaper Pages: 201 - 207

7. Participation of soluble and oxidizable soil organic compounds in denitrification

   • R. Katz
   • J. Hagin
   • L. T. Kurtz

   OriginalPaper Pages: 209 - 213

8. Myxobacteria from Antarctic soils

   • G. Ruckert

   Short communication Pages: 215 - 216