Tushman (business administration, Harvard Business School) and O'Reilly (Stanford U. Graduate School of Business) provide managers with the key principles of managing both for today's requirements and tomorrow's possibilities, to enable an organization to maintain long-term success. This reprint of the 1997 text includes a brief new preface by the authors, noting some of the dramatic changes in technology, markets, and competition over the past five years. Annotation (c) Book News, Inc., Portland, OR (booknews.com)