1. Titles of forthcoming papers

   Legacy Pages: A5 - A5

2. Photoelectrolysis of water with semiconductors

   • M. Tomkiewicz
   • H. Fay

   Invited Paper Pages: 1 - 28

3. Defect structure in EuS single crystals grown from the melt

   • Chang P. H.
   • R. Herz
   • H. Strunk

   Contributed Papers Pages: 29 - 33

4. Deep levels of iron implanted inn-type silicon

   • H. Lefèvre
   • M. Schulz

   Contributed Papers Pages: 35 - 37

5. Crossed gratings: A theory and its applications

   • G. H. Derrick
   • R. C. McPhedran
   • M. Nevière

   Contributed Papers Pages: 39 - 52

6. An analysis of optical waveguide tapers

   • T. K. Lim
   • B. K. Garside
   • J. P. Marton

   Contributed Papers Pages: 53 - 62

7. A thermoelastic method to determine the thermal diffusivity

   • C. E. Bottani
   • G. Caglioti
   • P. M. Ossi

   Contributed Papers Pages: 63 - 66

8. Low-density dislocation arrays at heteroepitaxial Ge/GaAs-interfaces investigated by high voltage electron microscopy

   • H. Strunk
   • W. Hagen
   • E. Bauser

   Contributed Papers Pages: 67 - 75

9. NdP₅O₁₄ and NdAl₃(BO₃)₄ lasers at 1.3 μm

   • G. Huber
   • H. G. Danielmeyer

   Contributed Papers Pages: 77 - 80

10. Effect of doping and thermal vacancies on positron annihilation in semiconductors

    • S. Tanigawa
    • K. Hinode
    • N. Shiotani

    Contributed Papers Pages: 81 - 83

11. A positron annihilation study of carbon black and carbon-black-filled polybutadiene

    • D. H. D. West
    • V. J. McBrierty
    • C. F. G. Delaney

    Contributed Papers Pages: 85 - 92

12. Three-dimensional acoustic Fabry-Perot interferometer of α-quartz as converter of acoustic modes

    • D. Ivanov
    • U. Burov
    • M. Borissov

    Contributed Papers Pages: 93 - 96

13. Growth of a nonuniform ripple on a Gaussian beam in a plasma

    • M. S. Sodha
    • D. P. Singh
    • R. P. Sharma

    Contributed Papers Pages: 97 - 103

14. Four-photon processes stimulated by a fluctuating pump

    • L. I. Pavlov

    Contributed Papers Pages: 105 - 108

15. Computer-aided determination of annihilation and momentum transfer rates of slow positrons from argon gas atoms

    • P. S. Grover

    Contributed Papers Pages: 109 - 111

16. Forthcoming papers

    Abstract Pages: A7 - A9