PT - JOURNAL ARTICLE AU - RALB TI - The normal lung AID - 10.1136/thx.42.9.704-a DP - 1987 Sep 01 TA - Thorax PG - 704--704 VI - 42 IP - 9 4099 - http://thorax.bmj.com/content/42/9/704.2.short 4100 - http://thorax.bmj.com/content/42/9/704.2.full SO - Thorax1987 Sep 01; 42