The impressive breadth and comprehensiveness of the collective contributions to the symposium on which this book is based preclude any but a sharp focus for these foreword comments. But if a single word had to stand for the conference, and for what this professor wished to emphasize, it would be "interdisciplinary." The dynamic of the meeting, inevitably restrained in printed form, is indebted to the informed presentations and vigorous discussions of the participants and to the committee and staff who designed the program