1. The activity of stellar aggregates and the origin of cosmic rays

   • G. A. Gurzadyan

   OriginalPaper Pages: 213 - 231

2. Modulation patterns of astronomical imaging systems based on rotating grids

   • V. Dadurkevičius
   • D. A. Ralys

   OriginalPaper Pages: 233 - 247

3. Source flow expansion of monatomic gas into vacuum under external field of forces

   • A. G. El.-Sakka
   • S. A. Montasser

   OriginalPaper Pages: 249 - 256

4. Free convection and mass transfer effects on the control of the unsteady boundary layer on an infinite vertical porous limiting surface

   • N. D. Nanousis

   OriginalPaper Pages: 257 - 267

5. Effects of viscous dissipation and free convection currents on the flow of an electrically conducting fluid past an accelerated vertical porous plate

   • M. A. Hossain
   • H. Banu
   • R. A. Begum

   OriginalPaper Pages: 269 - 279

6. Unsteady hydromagnetic boundary-layer flow on a semi-infinite wall

   • G. C. Pande
   • P. Hatzikonstantinou

   OriginalPaper Pages: 281 - 288

7. The shock-wave structure for arbitrary Prandtl numbers and high mach numbers

   • M. A. Khidr
   • M. A. A. Mahmoud

   OriginalPaper Pages: 289 - 301

8. The dynamo theory of plasma turbulence wave in rotating celestial bodies

   • Tong Yi
   • Lu Shengzhi
   • Han Jiling

   OriginalPaper Pages: 303 - 316

9. Distance estimate of M31 based on the size distribution of Hii regions and dark clouds

   • I. A. Issa

   OriginalPaper Pages: 317 - 323

10. Continuum energy distribution of Be stars

    • Mahendra Singh

    OriginalPaper Pages: 325 - 331

11. Some observations of DX Aquarii

    • R. K. Srivastava

    OriginalPaper Pages: 333 - 340

12. Magneto-gravitational instability of a fluid through porous medium including finite ion Larmor radius

    • R. K. Chhajlani
    • R. K. Sanghvi

    OriginalPaper Pages: 341 - 347

13. The reflection effect in eclipsing binary systems

    • Luiz Paulo R. Vaz

    OriginalPaper Pages: 349 - 364

14. The formation of interstellar H₂ on transition metal grains

    • D. J. Yu
    • M. T. Zhou
    • Q. Q. Gou

    OriginalPaper Pages: 365 - 371

15. Hα line emission and infrared excess in Be stars

    • P. S. Goraya
    • B. S. Rautela

    OriginalPaper Pages: 373 - 381

16. The primeval hadron and the Regge law

    • C. A. Z. Vasconcellos
    • H. A. Dottori
    • A. A. Schmidt

    OriginalPaper Pages: 383 - 390

17. Identification of infrared sources in the IRAS circulars

    • Parag Seal

    OriginalPaper Pages: 391 - 404

18. Can the big-bang singularity be avoided in the scale-covariant theory?

    • Hafizur Rahman
    • S. Banerji

    Letter to the Editor Pages: 405 - 412

19. The measurement of the absorption properties of dry micro-organisms and its relationship to astronomy

    • F. Hoyle
    • N. C. Wickramasinghe
    • S. Al-Mufti

    Letter to the Editor Pages: 413 - 416

20. Two remarks on the properties of the initial universe

    • Attila Mészáros

    Letter to the Editor Pages: 417 - 418

21. Exact five-dimensional cosmological solutions

    • Dieter Lorenz-Petzold

    Letter to the Editor Pages: 419 - 422

22. Book reviews

    • A. Prigancová
    • J. Kleczek

    BookReview Pages: 423 - 426

23. List of forthcoming papers

    Legacy Pages: 427 - 427