A method for estimating the potency of smallpox vaccine / by John N. Force and James P. Leake. The immunological relationship of alastrim and mild smallpox / by James P. Leake and John N. Force.
Adresse Bibliographique
Washington : U.S. G.P.O., 1927.
Exemplaires
Description
vi, 64 p., [15] leaves of plates : ill. (some col.) ; 23 cm.