Section headings and selected papers: Nucleus. Comet nucleus models, D Mohlmann & E Kuhrt. ;he nucleus of comet Halley: surface structure, mean density, gas and dust production, H Rickman. Identification of surface features on comet P/Halley, H J Reitsema et al . Comet simulation experiments in the DFVLR space simulators, H Kochan et al . Cometary Aeronomy. Ion composition and chemistry, W-H Ip. Molecular ions in comets, S Wyckoff & J Theobal;. Gas. Image processing techniques for gas morphology studies in the coma of comet Halley, G Schwarz et al . An investigation of the solar light reflected by comet Halley and the gas emission's distribution using data from TKS on board VEGA-2, R Werner et al . The effect of Kepler Orbis on the distribution of neutrals and ions around comet Halley, P W Daly & K Jockers; Dust. Infrared properties of rough cometary grains, J M Perrin & P L Lamy.;Halley comet dust particle classification according to the data obtained by mass spectrometer PUMA-2, Yu P Dikov et al . Impacts of large dust particles on the Vega spacecraft, H Laakso et al . Plasma. Cometary plasma boundaries, T E Cravens. MHD turbulence and particle acceleration in a mass-loaded solar wind, A A Galeev et al . On the origin of the ions at 28 million kilometers upstream of comet Halley, I Konno. Discrete wave packets upstream from the Earth and comets, G Le et al . Energetic cometary ion flows in the pick-up region of comet Giacobini-Zinner, I G Richardson et al . Author Index.
