1. Nikolai Vasil'evich Belov (on his seventieth birthday)

   Announcement Pages: 611 - 619

2. Potentiometric study of the structure of hydrated ions in solutions

   • A. M. Golub
   • A. A. Baran

   OriginalPaper Pages: 620 - 624

3. Changes of structure in aqueous solutions of nonelectrolytes

   • V. A. Mikhailov

   OriginalPaper Pages: 625 - 628

4. Intermolecular interaction in the system (C₄H₂O)₂PO-HNO₃-H₂O

   • M. F. Pushlenkov
   • E. V. Komarov
   • M. E. Shurenkova

   OriginalPaper Pages: 629 - 635

5. Computer calculations on ESR spectra

   • Ya. S. Lebedev
   • D. M. Chernikova
   • N. N. Tikhomirova

   OriginalPaper Pages: 636 - 639

6. Investigation of internal motions in polyisobutylene by the method of electron paramagnetic resonance

   • G. M. Zhidomirov
   • Yu. D. Tsvetkov
   • Ya. S. Lebedev

   OriginalPaper Pages: 640 - 643

7. Nuclear quadrupole resonance spectrum of hexachloroethane

   • N. E. Ainbinder
   • A. D. Gordeev
   • G. B. Soifer

   OriginalPaper Pages: 644 - 646

8. Phase transitions in the gold — platinum system

   • V. V. Sanadze
   • N. I. Labartkava

   OriginalPaper Pages: 647 - 654

9. X-ray structural investigation of the crystals of the double salt of pentamminecopper perchlorate and ammonium perchlorate

   • M. Bukovska
   • M. A. Porai-Koshits

   OriginalPaper Pages: 655 - 661

10. Steric hindrances and conformation of molecules communication 6. Crystal and molecular structure of 4.4′-dichloroacenaphthene

    • R. L. Avoyan
    • Yu. T. Struchkov

    OriginalPaper Pages: 662 - 675

11. Internal asymmetry in complex compounds

    • I. B. Bersuker

    OriginalPaper Pages: 676 - 681

12. Electron paramagnetic resonance of complexes of vanadiun chloride with organoaluminum compounds

    • S. V. Shulyndin
    • N. N. Tikhomirova
    • A. K. Shilova

    Brief Communications Pages: 682 - 683

13. Infrared spectra and structure of strontium silicates

    • A. N. Lazarev
    • T. F. Tenisheva
    • N. A. Toropov

    Brief Communications Pages: 684 - 685

14. Structure of K₂O₅O₄·2H₂O

    • M. A. Porai-Koshits
    • L. O. Atovmyan
    • V. G. Andrianov

    Brief Communications Pages: 686 - 687

15. Stereochemistry of four-coordinated spin-free internal complex compounds of Co(II) and Ni(II) with o-hydroxyaldehydes

    • V. V. Zelentsov
    • V. K. Trunov

    Brief Communications Pages: 688 - 689

16. Structures derived from the CaF₂-CeO₂ cubic type

    • Yu. A. Pyatenko

    Brief Communications Pages: 690 - 691

17. Phase diagram of the aluminum — Boron system

    • V. T. Serebryanskii
    • V. A. Epel'baum

    Brief Communications Pages: 692 - 694

18. International Union on Crystallography Commission on Crystal Structure Data

    Legacy Pages: 695 - 704

19. Correction

    Erratum Pages: 705 - 705