This book, the last one written by Piaget, presents a new line of empirical studies based on a revised formulation of his theory of the development of logical reasoning. The amended theory overcomes many problems and criticisms of his earlier formulations by providing a fresh explanation for the origin of mental operations and mental organization based on the concept of meaning. It also offers a more elegant vision of the continuity in mental development from birth to adulthood. As the final revision of Piaget's theory -- and one that opens up new areas of inquiry -- this book calls for a...

A current, comprehensive issue on advances in equine dentistry. Topics include anatomy and physiology of mastication, oral and dental pathology of incisors, canines and cheek teeth, dental examination and charting the mouth, oral photography and endoscopy, advances in dental radiology, 3-D imaging, dental restraint and pain management, treatment of diseased teeth, diagnosing and treating dental related sinus disease, and the gold standard of dental care for juvenile, adult performance, and geriatric horses