Thoracic surgery.

Includes bibliographies.

Examples of Intra-Atrial Defects

Carbon dust drawing on Ross Stipple Board #00; Dr. Herbert E. Sloan, University of Michigan Department of Thoracic Surgery

Tracheal Compression Caused by Aortic Aneurysm

Carbon dust drawing on stipple board; Dr. Cameron Haight, University of Michigan Department of Thoracic Surgery