RT Journal Article SR Electronic T1 The normal lung JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 704 OP 704 DO 10.1136/thx.42.9.704-a VO 42 IS 9 A1 RALB YR 1987 UL http://thorax.bmj.com/content/42/9/704.2.abstract AB