DVB Scene 35

DVB Scene 30

DVB Scene Issue 44

DVB Scene 36

DVB Scene 40

DVB Scene 31

Pulmonary emphysema: Edited by Alvan L. Barach, M.D., and Hylan A. Bickerman, M.D., Baltimore, 1956, Williams & Wilkins Co., 545 pages, illustrated. $10

Handbook of respiration: Complied by Philip L. Altman, John F. Gibson, and Charles C. Wang, Philadelphia and London, W. B. Saunders Company