The modern researcher / Jacques Barzun and Henry F. Graff. Barzun, Jacques, 1907-2012. Graff, Henry F. (Henry Franklin), 1921- jt. aut. Historiography. History Research Methodology. 907.2 BAM Includes bibliographical references and index. Microfilm. New York, N.Y. : Columbia University Libraries, 1993. 1 microfilm reel ; 35 mm. Master negative: 93-2045-2. No. 2 on a reel of 3 titles. New York : Harcourt, Brace, 1957. 1993. 1957. 1957 Text 386 p. ; 1 microfilm reel ; 35 mm. eng