1. Preface

   • H. H. Einstein

   Pages: 199 - 199

2. Estimating Mean Fracture Trace Length and Density from Observations in Convex Windows

   • M. Mauldon

   Pages: 201 - 216

3. Estimating the Mean Trace Length of Rock Discontinuities

   • L. Zhang
   • H. H. Einstein

   Pages: 217 - 235

4. Microscopic Fracture Processes in a Granite

   • E. Z. Lajtai

   Pages: 237 - 250

5. Comment on the Paper O. Moustachi and J. F. Thimus: P-Wave Attenuation in Creeping Rock and System Identification

   • S. D. Glaser

   Discussion Pages: 251 - 254

6. Announcements

   Pages: 258 - 258