Political parties : Maurice Duverger; Translated by Barbara and Robert North. [Incorporates revisions by the author] With a foreword by D. W. Brogan. their organization and activity in the modern state / Duverger, Maurice, 1917- Political parties. JF2051 .D883 329.9 DUP London, Wiley 1954. 1954. 1954 Text 439 p. : eng