Section headings and selected papers: Preface. Observations in X-Ray Astronomy. The results of the MIR-KVANT in 1987-1989, R A Sunyaev et al . Observations of bright X-ray sources with the WATCH instrument, I Lapshov et al . A spectral signature of thick matter in the X-ray spectrum from the Seyfert 1 galaxy, IC4329A, M Matsuoka et al . Fluctuations in the X-ray background, X-ray source counts and Astro D, X Barcons & A C Fabia;. Observations in Gamma-Ray Astronomy. First observations with the SIGMA telescope, J P Roques et al . Recent results on celestial gamma radiation from SMM, G H Share. A high energy observation of the Coma cluster region, A Bazzano et al . Observations of Gamma-Ray Bursts. The most recent results of GRB observations with GINGA, T Murakami. First gamma-ray burst observations with the SIGMA telescope, F Pelaez et al . Observations of the Galactic Center and SN1987A. Recent balloon observation of the galactic center 511 keV annihilation line, M Leventhal. Two new X-ray transients near the galactic centre, J J M In't Zand et al . Recent results of gamma-ray imaging observations of the galactic center and Crab/A0535+26 regions, W R Cook et al . Future Missions and Instruments for X-Ray Astronomy. The advanced X-ray astrophysics facility, A C Brinkman. The silicon X-ray array SIXA onboard SPECTRUM-X-GAMMA, O Vilhu et al . Future Missions and Instrumentation for Gamma-Ray Astronomy. SIGMA: the hard X-ray and soft gamma-ray telescope on board the GRANAT Space Observatory, J Paul et al . The oriented scintillation spectrometer experiment on GRO, J D Kurfess et al . Author Index.
