1. Effect of gravitational radiation upon electromagnetic waves in a dispersive medium

   • Bruno Bertotti
   • Roberto Catenacci

   Research Articles Pages: 329 - 343

2. A class of algebraically general solutions of the Einstein-Maxwell equations for non-null electromagnetic fields

   • N. Tariq
   • B. O. J. Tupper

   Research Articles Pages: 345 - 360

3. A complex minkowski space approach to twistors

   • R. O. Hansen
   • Ezra T. Newman

   Research Articles Pages: 361 - 385

4. Exact solution for the gravitational field of a charged, magnetized, spinning mass

   • F. Paul Esposito
   • Louis Witten

   Research Articles Pages: 387 - 396

5. Curvature collineations in certain gravitational space-times

   • K. P. Singh
   • D. N. Sharma

   Research Articles Pages: 397 - 408

6. Minimum size of charged particles in general relativity

   • D. A. Sardelis

   Research Articles Pages: 409 - 422

7. On vacuum metrics of type (3, 1)

   • Ivor Robinson

   Research Articles Pages: 423 - 427

8. Obituary

   • A. M.

   Announcement Pages: 429 - 430

9. Announcement: International symposium on “Relativity and Unified Field Theory”

   Announcement Pages: 431 - 431