. . . "1860" . . "1860-03-15" . . . . . . . . . . . . . . "Haffkine, Waldemar Mordecaiwolfs" . . "plague vaccine" . . . . . . . . . . "Haffkine" . "Waldemar Mordecai Haffkine" . . . . . . . . . . . . . . . . . . . "Haffkine's vaccine" . . "V.M. Haffkine/Waldemar Haffkine" . . "Waldemar Haffkine" . . . "vaccine" . . . . . . . "1930" . . . "Waldemar Haffkine" . . . . . . . . . . . . . . . . "Haffkine's" . "Waldemar Mordechai Wolff Haffkine" .