PT - JOURNAL ARTICLE AU - Ian Gregg TI - The Measurement of Peak Expiratory Flow Rate and its Application in General Practice DP - 1964 Mar 01 TA - The Journal of the College of General Practitioners PG - 199--214 VI - 7 IP - 2 4099 - http://bjgp.org/content/7/2/199.short 4100 - http://bjgp.org/content/7/2/199.full SO - J Coll Gen Pract1964 Mar 01; 7