Textbook in PDF format

"This is a book about forecasting methods. The emphasis is on methods for long-range forecasting. The methods are applicable to all areas of the social, behavioral, and management sciences. .Long-Range Forecasting is a book for "doers, " the people who have done or who are doing forecasting. These doers may be in business, in government, in academia, or in consulting. Doers may also be students working on forecasting projects in courses such as finance, marketing, economics, or sociology, or in those increasingly popular courses dealing with the future. "