Orthopedic Clinics: Lumbar Intervertebral Disk Degeneration - October - December - John F. Kennedy , Philadelphia, 19103 - 2899 W.B Saunders Company 2011 - i - xii 447 - 606 Printed Material Volume: 42Number : 42011 ISSN: 0030-5898 Subjects--Topical Terms: Orthopedics