W. Somerset Maugham ; introduction and notes by Robert Calder. Thomas Malthus ; introduction and notes by Robert J. Mayhew. translated, with introduction and notes by Robert Kaster. edited with an introduction and notes by Robert Welch. introduction and notes by Robert Calder translated with introduction and notes by Robert Cook. edited with an introduction and notes by Robert Mezey Ann Radcliffe ; introduction and notes by Robert Miles. edited with an introduction and notes by Robert DeMaria. edited with an introduction and notes by Robert L. Mack.