. . "Población." . . "Wirtschaft Europa Geschichte 18. Jh." . . "1789 - 1900" . . "1789-1900" . "Volkswirtschaft" . . "Europe" . . "Europe." . "Maltusianismo." . . "Economische verandering." . . "Großbritannien" . . "Soziale Situation." . . . . . . . "Malthus and his time" . "Malthus and his time"@en . . . . . . . . . . . . . . . . . . "Congressen (vorm)" . . "Kongress" . . . . . . "Aufsatzsammlung" . "Malthus and his time [international conference held in Paris from 27 - 29 May 1980 entitled \"Malthus hier et aujourd'hui\"]" . . . . . . . . . . . . . . . . . . . . . . "Conference papers and proceedings"@en . "Conference papers and proceedings" . . "International Conference on Historical Demography (1980 : Paris, France)" . . . "Bevölkerungstheorie" . . "Población Control." . . "1800 - 1899" . . "Sozialpolitik" . . "Wirtschaft Europa Geschichte 19. Jh." . . "Theorieën." . . "Europa - Condizioni economiche e sociali - Sec.19. - Saggi." . . "Aufsatzsammlung." . . "Sozialphilosophie." . . "Geschichte 1789-1830." . . "Malthusianisme." . . "Europa" . . "Bevolking." . . "démographie historique [congrès]" . . "Europa" . . "Europa." .