The most frequently voiced concern in recent years regarding scientific publishing is the increased amount of information that must be handled. As information is generated faster and faster, especially in the classical areas of science and engineering, the burden of keeping up with it becomes greater each year. Recognition of this problem, coupled with recent advances in publishing technology, has led to increasing efforts to develop new services that would publish information more rapidly, provide faster and easier access to information already published, and package information in forms that are used more easily and efficiently. New technology now has the potential of achieving these advantages while keeping costs to a minimum. Two main approaches can be taken to develop new information services. Most frequently, the kinds of information available and the ways in which it can be published and distributed are assessed and then the services that can be developed from available resources are marketed. ...