MEDICAL BOOKS
Yamada: Textbook of Gastroenterology, 2nd ed.
Sabiston: Textbook of Surgery, 15th ed.
Behrman: Nelson Textbook of Pediatrics, 15th ed.
DeVita: Cancer: Principles and Practice of Oncology, 5th ed.
Rosen: Emergency Medicine: Concepts and Clinical Practice, 4th ed.
PLUS 30 MORE medical texts online. You can even search them all simultaneously.

Washington University’s Text Books Links