Lessing, Ferd. (Ferdinand), 1882-1961 (Personal Name)

His Lehrgang der nordchinesischen Umgangssprache, 1933: t.p. (Ferd. Lessing)

NUC pre-56 (Lessing, Ferdinand Diederich, 1882-1961)

His Manual of the Mandarin language, 1914-: v. 1, t.p. (F. Lessing)