An essay on the principle of population : or, a view of its past and present effects on human happiness / Malthus, T. R. (Thomas Robert), 1766-1834. Bettany, G. T. (George Thomas), 1850-1891. Population. 301.32 MAE Replace; LC copy replaced by preservation microfilm DLC London: John Murray 1890 Text xvii, 536 p. ; eng