1. The seventy-fifth birthday of academician Nikolai Antonovich Dollezhali

   Announcement Pages: 1027 - 1027

2. Basis of the standard lifetime of power generating units of nuclear power stations

   • L. D. Gitel'man
   • E. F. Ratnikov
   • V. V. Khanin

   Articles Pages: 1028 - 1033

3. Calculation of hydraulic-resistance coefficient and velocity profile in pipes with regular roughness

   • M. Kh. Ibragimov
   • L. L. Kobzar'

   Articles Pages: 1034 - 1042

4. The composition of uraninite from pegmatite and uranium-molybdenum deposits

   • V. A. Strel'tsov
   • V. A. Boronikhin
   • A. I. Tishkin

   Articles Pages: 1043 - 1051

5. The mechanical properties of single crystals of irradiatedα-uranium with free or restrained radiation growth

   • Yu. M. Golovchenko
   • F. P. Butra
   • O. L. Fufaeva

   Articles Pages: 1052 - 1057

6. Mode transformation in the resonator of a drift-tube linear accelerator

   • V. A. Bomko
   • A. P. Klyucharev
   • B. I. Rudyak

   Articles Pages: 1058 - 1063

7. Comparison of costs of purifying radioactively contaminated water by sorbents of multiple-and single-use

   • F. V. Rauzen
   • V. V. Aleshnya

   Articles Pages: 1064 - 1068

8. Longitudinal instability of a circulating beam interacting with a passive resonator

   • V. I. Balbekov
   • P. T. Pashkov

   Articles Pages: 1069 - 1072

9. Measurement of ratio of effective cross sections of capture in²³⁸U and fission of²³⁵U in a fast-thermal critical assembly

   • M. V. Bychkov
   • A. V. Skobakarev
   • O. I. Yaroshevich

   Abstracts Pages: 1073 - 1074

10. Calculation of pressure and temperature within the casing of a water-water reactor

    • I. Mishak

    Abstracts Pages: 1074 - 1075

11. p Versus T phase diagram of the uranium-oxygen system

    • Yu. V. Levinskii

    Abstracts Pages: 1075 - 1076

12. Can uranium be reduced from the hexafluoride to the elementary state by hydrogen?

    • Yu. N. Tumanov
    • N. P. Galkin

    Abstracts Pages: 1076 - 1077

13. Calculation of some diffusion parameters and gas generation of particles on heating the samples after ionic bombardment

    • A. A. Pisarev
    • V. A. Pisarev

    Abstracts Pages: 1077 - 1079

14. Allowance for geometry in activation analysis involving fast neutrons generated in a cyclotron by the reactions⁹Be(d, n)¹⁰B AND⁹Be(p, n)⁹B

    • V. A. Muminov
    • B. Akabirov
    • N. Abibullaev

    Abstracts Pages: 1079 - 1079

15. Observation of anomalously large pores in nickel bombarded by carbon ions

    • V. I. Krotov
    • S. Ya. Lebedev
    • V. N. Bykov

    Letters to the Editor Pages: 1080 - 1081

16. Kinetic instability of an intense beam of charged particles in a storage ring

    • N. N. Naugol'nyi

    Letters to the Editor Pages: 1082 - 1084

17. Effect of energy degradation on the energy spectrum of fast electrons in matter

    • V. S. Remizovich

    Letters to the Editor Pages: 1085 - 1087

18. Specific heats of yttrium and gadolinium at high temperatures

    • I. I. Novikov
    • I. P. Mardykin

    Letters to the Editor Pages: 1088 - 1090

19. The method of recursive sums and integrals for solving multigroup neutron diffusion equations

    • V. Yu. Vasil'ev
    • A. D. Dymnikov

    Letters to the Editor Pages: 1091 - 1093

20. Temperature dependence of total cold neutron cross section in light water and benzene

    • S. B. Stepanov
    • V. E. Zhitarev
    • V. Ya. Krasil'nikov

    Letters to the Editor Pages: 1094 - 1096

21. Comparison of accident dosimetry systems at HPRR

    • I. B. Keirim-Markus
    • V. A. Knyazev
    • S. N. Kraitor

    Letters to the Editor Pages: 1097 - 1099

22. Optimal sample dimensions for gamma activation analysis

    • S. P. Kapitsa
    • Yu. T. Martynov
    • Yu. M. Tsipenyuk

    Letters to the Editor Pages: 1100 - 1102

23. Determination of²³⁴Am half-life

    • V. G. Polyukhov
    • G. A. Timofeev
    • A. P. Chetverikov

    Letters to the Editor Pages: 1103 - 1105

24. XXVI session of the COMECON Permanent Commission on the peaceful uses of atomic energy

    • V. A. Kiselev

    Comecon News Pages: 1106 - 1106

25. Collaboration daybook

    Comecon News Pages: 1107 - 1108

26. Silver jubilee of the Soviet of Mutual Economic Aid

    • A. F. Panasenkov

    Information Pages: 1109 - 1114

27. Conference on physical aspects of atmospheric pollution

    • B. I. Styro

    Conferences and Meetings Pages: 1115 - 1117

28. VIII International Symposium on Thermonuclear Reactor Technology

    • V. S. Strelkob

    Conferences and Meetings Pages: 1118 - 1119

29. International Symposium on the Use of isotope Techniques in Groundwater Hydrology

    • V. T. Dubinchuk
    • A. M. Dimaksyan

    Conferences and Meetings Pages: 1120 - 1121

30. International conference on meson spectroscopy

    • V. A. Belyakov

    Conferences and Meetings Pages: 1122 - 1123

31. Meeting of the four nuclear data centers

    • V. N. Manokhin

    Conferences and Meetings Pages: 1124 - 1125

32. Meetings of specialists on nonneutron nuclear data

    • F. E. Chukreev

    Conferences and Meetings Pages: 1126 - 1126

33. USSR-Belgium-Holland seminar on treatment and burial of radioactive wastes

    • N. A. Rakov

    Conferences and Meetings Pages: 1127 - 1128

34. New books

    Book reviews Pages: 1129 - 1131