I. Astrophysical Observations and Models.- Molecular Astrophysics.- Chemical Composition and Molecular Abundances of Molecular Clouds.- Radio Observations of Interstellar Molecules.- Sub-Millimeter Astronomy and Astrophysics.- Infrared Spectroscopy of Interstellar Molecules.- Visible and Ultraviolet Studies of Interstellar Molecules.- The Production of Complex Molecules in Dense Interstellar Clouds.- Chemical Reactions in Diffuse Clouds and the Chemistry of Isotope Fractionation in the Interstellar Gas.- The Chemistry of Shocked Regions of the Interstellar Gas.- Theoretical Models of Shock Waves in Molecular Clouds.- Cometary Comae.- Molecular Spectra of the Outer Planets and Satellites.- II. Theoretical and Experimental Laboratory Studies.- Molecular Ions in Astrophysics and in the Laboratory.- Millimeter and Sub-Millimeter Wave Spectroscopy in the Laboratory and in the Interstellar Medium.- Studies of Astrophysically Important Molecular Ions with Ultrasensitive Infrared Laser Techniques.- Time Resolved Properties of Small Astrophysical Molecules.- Rotational Excitation in Molecular Beam Experiments.- Ion-Molecule Reactions at Low Temperatures.- Ion-Molecule Reactions in Interstellar Molecular Clouds.- Theoretical Predictions of the Infrared and Microwave Spectra of Small Molecules.- Recent Theoretical Results of Rotational-Translational Energy Transfer.- Rotational and Vibrational Energy Transfer in Diatomic and Polyatomic Molecules.- Calculation of Radiative Lifetimes of Allowed and Forbidden Transitions.- Molecular Photoionization Processes of Astrophysical and Aeronomical Interest.- Dissociative Recombination of Interstellar Ions: Electronic Structure Calculations for HCO+.- Contributed Papers.- Detection of Interstellar Rotationally Excited CH.- Interstellar Clouds: From a Dynamical Perspective on their Chemistry.- Models of Galactic Molecular Sources.- Millimeter Wave Spectroscopy of Transient Species in RF and DC Discharges.- Photofragment Spectroscopy of Interstellar Molecules.- Measurements of Ion-Molecule Reaction Rate Coefficients between 8 and 160 K by the Cresu Technique.- Measurements of Ion-Molecule Reaction Rate Coefficients with an Ion-Drift-Tube Method at Temperatures from 18 to 420 K.- Laboratory Studies of Ion Reactions with Atomic Hydrogen.- Dissociative Recombination of H3+, HCO+. N2H+, and CH5+.- Molecular Dissociation Functions Obtained from Thermodynamic and Spectroscopic Data.- A Theoretical Study of H2O Masers.- The Excitation of Interstellar C2.- Photodissociation Processes in the OH and HC? Molecules.- Low Temperature Rosseland Mean Opacities for Zero-Metal Gas Mixtures.- Contributed Oral Presentations.- A High-Sensitivity Spectral Survey of Orion A in the 1.3 MM Region.- The Importance of Neutral-Neutral Reactions in the Chemistry of CN in Diffuse Clouds.- Long Chain Molecules in Interstellar Clouds.- Desorption of Molecules from Interstellar Grains.- Molecular Mantles on Interstellar Grains.- Electron Capture by Multiply Charged Ions: Population of Excited States.- Photoabsorption and Photodissociation of CO in the 900–1200 A Region.- Photodissociation of H2O in the First Absorption Band in the VUV as the Pumpmechanism of the Astronomical OH-Maser.- Laser Spectroscopy on Small Molecules of Astrophysical Interest in the Vacuum UV.- Experimental Measurements of the Branching Ratio for Dissociative Recombination Processes.- Astrophysically Important Charge Transfer Reactions: Recent Theoretical Results.- Potential Surface of C2-H2.- Theoretical Predictions of Atomic and Molecular Properties for the Construction of Empirical Scattering Potentials.- Rovibrational Excitation of 12C16O by H2.- List of Participants.- Molecule Index.
