Introduction; G. Bekey, R. Arkin. Cooperative Mobile Robotics: Antecedents and Directions; Y.U. Cao, et al. Multiagent Mission Specification and Execution; D.C. MacKenzie, et al. Task Modelling in Collective Robotics; C.R. Kube, H. Zhang. Reinforcement Learning in the Multi-Robot Domain; M.J. Mataric. Phylogenetic and Ontogenetic Learning in a Colony of Interactive Robots; A. Agah, G.A. Bekey. Collision Avoidance by Using Space-Time Representations of Motion Processes; M. Rude. Decentralized Motion Planning for Multiple Mobile Robots: The Cocktail Party Model; V.J. Lumelsky, K.R. Harinarayan. Group Behaviors for Systems with Significant Dynamics; D.C. Brogan, J.K. Hodgins. Subject Index.