A primer of statistics for political scientists [by] V.O. Key, Jr. With a foreword by Frank Munger. Key, V. O. (Valdimer Orlando), 1908-1963. Political statistics. JA74 .K48 1966 311.2 KEP Includes bibliographical references. New York, Crowell [1966] [1966] 1966 Text xii, 209 p. eng