Philosophy of Scientific Investigation: Preface to "De l'Anaphylaxie a l'Immunite", Paris, 1921.
Baltimore: Johns Hopkins Press, 1943. 26pp. Very slim 4to, orange boards. Baltimore: Johns Hopkins Press, (1943). Edge worn, but still a very good copy. Translated from the French with an introduction by Henry E. Sigerist. Foreword by Warfield T. Longcope. More