. . . . . . "Historian's handbook, a key to the study and writing of history"@en . . . "Bibliography"@en . . "Historian's handbook a key to the study and writing of history" . "Historian's handbook a key to the study and writing of history"@en . . . "Historian's Handbook : a key to the study and writing of history" . . . . . "Historian's handbook; a Key to the study and writing of history" . . "Historian's handbook : a key to the study and writing of history" . "Historian's handbook : a key to the study and writing of history"@en . . . . . . . . . "Handbooks and manuals"@en . "Handbooks and manuals" . . . . . . . . "Historian's Handbook, A Key to the Study and Writing of History.# With the Collaboration of William Columbus Davis (And Others)"@en . . . . . "Historian's handbook; a key to the study and writing of history"@en . "Handbooks, manuals, etc"@en . . . . "Historiography Handbooks manuals, etc." . . "Storiografia Metodo." . . "Geschichtswissenschaft." . .