1. Local correlation of current density, radiant emittance and temperature within GaAsP light-emitting diodes

   • S. Metz
   • R. Maly

   Papers Pages: 141 - 151

2. Epitaxial silicon avalanche photodiode

   • A. D. Lucas

   Papers Pages: 153 - 160

3. Partially polarized fields generated by constant-amplitude (non-thermal) beams

   • G. J. Troup
   • R. G. Turner
   • B. J. Walsh

   Papers Pages: 161 - 166

4. Self-focusing of electromagnetic waves in a magnetoplasma

   • M. S. Sodha
   • R. S. Mittal
   • V. K. Tripathi

   Papers Pages: 167 - 180

5. An efficient end reflector for optical fibres

   • J. Stone
   • V. Ramaswamy
   • L. G. Cohen

   Letter Pages: 181 - 184

6. Mixed gas laser of the three basic colours

   • N. V. Sabotinov
   • P. K. Telbizov

   Letter Pages: 185 - 187

7. Increased efficiency for the up-conversion of 10.6 μm radiation into the visible

   • E. S. Voronin
   • V. S. Solomatin
   • V. V. Shuvalov

   Letter Pages: 189 - 190

8. The population distribution in 3p and 3s excited states of neon 1 in the a.c. gas display panel discharge

   • B. Welber
   • C. Lanza

   Letter Pages: 191 - 196

9. Further results concerning X-ray collimated emission from CuSO₄ doped gelatin targets

   • S. G. Dinev
   • I. V. Tomov

   Letter Pages: 197 - 198

10. Conference announcements

    Announcement Pages: 199 - 200

11. Announcement

    Announcement Pages: ii - ii

12. Addendum

    • A. Dienes

    Erratum Pages: ii - ii