Langer, William L. European alliances and alignments, 1871-1890 by William Langer. - 2d ed. with supplementary bibliographies. - New York A.A. Knopf 1956. - xiii, 510A-B, xiv p. maps, diagrs. 24 cm. Includes bibliographies. Subjects--Geographic Terms: Europe--Politics and government--1871-1918.