Fleming, Alexander, Sir, 1881- Penicillin : its practical application / A. Fleming. - 2nd ed. rev., rewritten and enl. - London : Butterworths , 1950. - xiii, 491 p. : ill. ; 22 cm. Includes bibliographies. Subjects--Topical Terms: Penicillin National Library of Medicine Call No.: QV 354 / F629p 1950