This paper defines and discusses the nature of management; outlines the primary management functions and activities, emphasizing the importance of communication and coordination to successful management; and examines the place of communication as a management function in the library setting. After a discussion of the key role of coordination in management, various approaches to organizational coordination are outlined, including chain of command, grouping of activities, formation of committees, and informal discussions. Some of the basic definitions of the manager's role within the organization and the qualities common to managers and administrators are then reviewed. A discussion of the tasks and functions of the manager with respect to problem solving, planning, staffing, and coordination is followed by a discussion of the nature, importance, and purpose of communication within organizations. The relationships between organizational communication and conflicts in library administration, time usage in libraries, and library effectiveness are then addressed. The activities of librarians that are facilitated by effective communication are briefly reviewed. A reference list and three figures accompany the text. (JL)