Louis-Christophe Zaleski-Zamenhof Esperanto on behalf of the Zamenhof family, Louis-Christophe Zaleski-Zamenhof has nevertheless been disinclined to assume a leading role in the Esperanto movement. Though he had no plans to write an autobiography, Polish journalist Roman Dobrzyński persuaded him to participate in a series of conversations over a ten-year period, which resulted in "La Zamenhof-strato" ("Zamenhof Street", 2003), a book detailing his life during the Nazi occupation of Poland, including his experiences in the Warsaw Ghetto and the Polish Resistance. Beyond an account of his own life, the book also relates the philosophy, history and tribulations of the Esperanto movement pioneered by
Ludwik Hirszfeld Hirszfeld was the first to foresee the serological conflict between mother and child, which was confirmed by the discovery of the Rhesus factor. Upon this basis he developed, in the last years of his life, an "allergic" theory of miscarriage and recommended antihistamine therapy. Hirszfeld also investigated tumors and the serology of tuberculosis. His discovery of the infectious agent of paratyphoid C had far-reaching consequences for differential diagnosis. Ludwik Hirszfeld Ludwik Hirszfeld (5 August 1884 in Warsaw – 7 March 1954 in Wrocław) was a Polish microbiologist and serologist. He is considered a co-discoverer of the inheritance of ABO blood