Reviews of topical problems

B.I. Shklovskii, A.L. Éfros “Percolation theory and conductivity of strongly inhomogeneous media” Sov. Phys. Usp. 18 845–862 (1975)

É.L. Nagaev “Ferromagnetic and antiferromagnetic semiconductors” Sov. Phys. Usp. 18 863–892 (1975)

É.D. Lozanskii “Development of electron avalances and streamers” Sov. Phys. Usp. 18 893–908 (1975)

Physics of our days

N.R. Batarchukova, T.I. Glozman “Current state of the problem of the definition of the meter” Sov. Phys. Usp. 18 909–919 (1975)

Meetings and conferences

Ya.B. Zel’dovich, N.L. Manakov, L.P. Rapoport “Quasienergy of a System Subjected to a Periodic External Disturbance” Sov. Phys. Usp. 18 920–921 (1975)

S.L. Mandel’shtam, É.Ya. Kononov “Spectroscopy of Highly Ionized Atoms” Sov. Phys. Usp. 18 921–923 (1975)

R.V. Ambartsumyan, V.S. Letokhov “Collisionless Dissociation of Polyatomic Molecules in a Strong Infrared Laser Field, and Its Use for Separation of Isotopes” Sov. Phys. Usp. 18 923–925 (1975)

V.M. Agranovich, Yu.E. Lozovik, A.G. Mal’shukov “Electronic Restructuring at the Dielectric- Metal Boundary and the Search for High-Temperature Superconductivity” Sov. Phys. Usp. 18 925–926 (1975)

G.N. Zhizhin, O.I. Kapusta, M.A. Moskaleva, V.G. Nazin, V.A. Yakovlev “Spectroscopy of Surface Waves and the Properties of the Surface” Sov. Phys. Usp. 18 927–928 (1975)

E.N. Antonov, V.G. Koloshnikov, V.R. Mironenko “In-Cavity Absorption Spectroscopy with a Continuous Dye Laser” Sov. Phys. Usp. 18 928–928 (1975)

Personalia

A.S. Borovik-Romanov, N.V. Zavaritskii, B.N. Samoilov, M.S. Khaikin, Yu.V. Sharvin “Aleksandr Iosifovich Shal’nikov (on his seventieth birthday)” Sov. Phys. Usp. 18 929–930 (1975)