Book jacket discoloration Some wear on front and back cover Aaron David Silver Prima Pub., 1988 - 221 pages Your company, no matter how successful, can be suddenly sideswiped by unexpected economic upheaval. The surprise attack can come from any of four sources: • National recession, depression, or runaway inflation • Regional or local disaster (like the oil depression of the Southwest) • Industry-wide downturn • Sudden product obsolescence.