PT - JOURNAL ARTICLE AU - F. F. Hafez AU - Sheila M. Stewart AU - M. Eileen Burnet TI - Penicillin Levels in Sputum AID - 10.1136/thx.20.3.219 DP - 1965 May 01 TA - Thorax PG - 219--225 VI - 20 IP - 3 4099 - http://thorax.bmj.com/content/20/3/219.short 4100 - http://thorax.bmj.com/content/20/3/219.full SO - Thorax1965 May 01; 20