Reviews of topical problems

N.N. Gor’kavyi, A.M. Fridman “The physics of planetary rings” Sov. Phys. Usp. 33 (2) 95–133 (1990)

S.A. Gredeskul, V.D. Freilikher “Localization and wave propagation in randomly layered media” Sov. Phys. Usp. 33 (2) 134–146 (1990)

E.F. Sheka “Spectroscopy of amorphous substances with molecular structure” Sov. Phys. Usp. 33 (2) 147–166 (1990)

Book reviews

V.G. Terziev “New reference books on magnetic properties of matter” Sov. Phys. Usp. 33 (2) 167–167 (1990)

P.G. Eliseev “Laser engineering” Sov. Phys. Usp. 33 (2) 168–168 (1990)