Perspectives -- The Galactic Center: Outstanding Puzzles and Challenges (Introductory Review) -- Galactic Centers - Ours and Other Galaxies'(Review) -- The Distance to the Galactic Center: R0 (Review) -- Proper Motions of H2O Masers in W49(N) and the Distance to the Galactic Center -- OH-IR Sources and the Galactic Centre Distance -- The Galactic Bulge -- Characteristics and Space Distribution of Stars in the Bulge of the Milky Way (Review) -- Evidence against Formation of the Stellar Bulge by Mergers Taking Place over a Hubble Time -- The Nature of The Carbon Stars in The Galactic Bulge -- The Distribution of Stars Within 2° of The Galactic Centre Revealed by 1 to 2 ?m Images -- The Large-Scale Interstellar Medium -- Non-Circular Gas Motions in the Inner Galaxy (Review) -- Gas and Dust in the Inner Few Degrees of the Galaxy(Review) -- Abundances in the Galactic Center -- IRAS Observations of the Galactic Center -- Molecular Line Observations of the Galactic Center Region -- Molecular Clouds in the Central 100-pc of the Galactic Center -- OH in the Galactic Centre -- Observation of Diffuse CII Emission in the Galactic Center Region -- 158 ?m [CII] Mapping of the Galactic Center Molecular Clouds -- Wide-Line Molecular Clouds and the Gamma-Ray Deficit Toward the Galactic Center -- A Survey of Radio Recombination Line Emission From the Galactic Center Region -- On The Evolution of Accretion Disks in Galactic Centers -- On Heating, Ionization, and Star Formation in the Galactic Center Region -- Observations of Discrete Sources -- Detection of the 20?3-1 Transition of 13CH3OH -- Distribution of the H2O Masers in the Sagittarius B2 Core -- A Possible Molecular Counterpart to the G359.54+0.18 Non-Thermal Filaments -- Bright Near-Infrared Sources Within 1° of the Galactic Center -- G359.3-0.82: An Unusual Radio Source -- VLA Observations of Far-IR Sources Toward the Galactic Center -- Ejection Structures -- Large Scale Ejection Structures in the Galactic Center (Review) -- Galactic Center Jet of 4-kpc Length -- Symmetrical Structures in the Galactic Centre Region -- The Arc -- Filamentary Structures Near the Galactic Center -- Observations of Linear Polarization at 32 GHz of the Galactic Center Arc -- VLA Polarization Observation of the Radio Arc at 15 GHz -- Unusually Wide, High-Velocity Radio Recombination Lines from GO.15-0.05 in the Radio Arc -- An IR Quintuplet Near the Galactic Center -- Mid-Infrared Observations of the Galactic Center Arc and the Sgr A East HII Region -- HI Absorption Measurements over the Galactic Centre Radio Arc and Arches Regions -- Magnetic Phenomena -- MHD Aspects of Galactic Center Physics (Review) -- MHD Mechanisms for the Formation of Galactic Center Lobes -- On The Galactic Dynamo -- Electrodynamics at Galactic Center -- The Strong Magnetic Field Galactic Center-AGN-Quasar Model -- Gas Dynamics in the Galactic Centre: Gravity vs. Magnetism -- The Environment of the Sgr A Comple -- The Nature, Location and Environment of Sgr A East (Review) -- Continuum Observations of Sgr A at mm/submm Wavelengths -- A Large Near-Infrared Image of the Galactic Center -- HI Absorption Against the 40 km s-1 Cloud and the Circumnuclear Disk in Sgr A -- NH3 Observations of the Sgr A Complex Region with the Nobeyama Millimeter Array -- Gas Feeding Toward the Central Neutral Ring in the Galactic Center -- Shocked Molecular Gas Near the Galactic Center -- H76? Emission from the Sgr A 15 km s-1 Cloud -- Sagittarius A West and the Circumnuclear Disk -- The Circumnuclear Disk (Review) -- Hat Creek HCO+ and HCN Observations of Sgr A -- Fabry-Perot Images of Ionized and Molecular Hydrogen in Sgr A -- CS Multitransition Observations of the Circumnuclear Disk -- OH in the Environment of Sgr A -- The Luminosity of the Central Parsec of the Galaxy (Review) -- The Kinematics of the Ionized Filaments in Sgr A West (Review) -- Multi-Array ?2 and 6cm Radio Continuum Observations of Sgr A West -- High Quality VLA Imaging of Sgr A West at 6 cm -- Magnetized Structures in Sgr A West (Review) -- High Resolution 11.6 ?m Images of the Central 1 Parsec of the Galactic Center With a New 58 × 62 Si:Ga Array Camera. -- CO Along the Line of Sight to Galactic Center Infrared Sources -- Comment on the Standard of Rest Associated With the Neutral Ring at the Centre of the Galaxy -- Stars and the Central Mass Distribution -- The Stellar Cluster (Review) -- A Search for Variable Stars at the Galactic Center -- The Mass Distribution in the Central Few Parsecs of the Galaxy (Review) -- The Mass Distribution in the Galactic Center -- The Mass Distribution in the Galactic Centre Estimated from OH/IR Stars -- The Compact Central Objects -- High Resolution Near-Infrared Imaging and Computer Simulations of a Lunar Occultation of the Galactic Center -- The Stars That Power the Galactic Centre -- Velocity-Resolved Spectra of Br-? and Br-? on IRS16 SW and NE -- Observations of HI Br- ?, [Ne II], and [Ar III] from the Central Parsec of the Galaxy -- High Velocity Ionized Gas near 1RS 16 -- The Compact Nonthermal Radio Source at the Galactic Center: an Update (Review) -- Long-Term Variations of the Compact Radio Source Sgr A* at the Galactic Center -- Considerations of a Massive Black Hole -- Manifestations of a Massive Black Hole in the Galactic Center -- Constraints on and Alternatives to a Massive Black Hole at the Galactic Center (Review) -- The High-Energy View -- X-Ray Observations of the Galactic Centre (Review) -- Gamma-Ray Imaging of the Galactic Center Region -- Annihilation Radiation and Gamma-Ray Continuum from the Galactic Center Region (Review) -- A Search for Radio Recombination Lines of Positronium Near the Galactic Center -- MeV Gamma Ray Observational Constraints on the Galactic Center Region -- Low Energy Galactic Center Gamma Rays from Low Mass X-Ray Binaries -- Mapping the Galactic Center Region with GRASP -- Study of the Galactic Center with a High Resolution Gamma Ray Telescope -- Conference Summaries -- Observational Perspective -- Theoretical Perspective -- Author Index -- Source Index.