Product Description: Thirty years ago, Alfred Crosby published a small work that illuminated a simple point, that the most important changes brought on by the voyages of Columbus were not social or political, but biological in nature. The book told the story of how 1492 sparked the movement of organisms, both large and small, in both directions across the Atlantic...read more (view table of contents, read Amazon.com's description)

Product Description: Long-term care has emerged as an important issue in American society. The population of persons with chronic illnesses and disabilities, dependent upon supportive care, has grown rapidly and will increase sharply when Baby Boomers join the ranks of old age in the early part of the twenty-first century...read more (view table of contents, read Amazon.com's description)