An essay on the principle of population / T. R. Malthus ; introd. by T. H. Hollingsworth. Malthus, T. R. (Thomas Robert), 1766-1834. Population. 301.32 MAP Includes index. Bibliography: p. xxxiii-xxxiv. London : Macmillan 1894. 1894. 1973 Text 134 p. ; eng [Everyman's university library ; 692]