"Wirtschaftslehre." . . "Geografia humana" . . "Sociaal-economische situatie." . . "Sozialgeografie." . . . . "Wirtschaftsgeografie." . . "Filippijnen." . . "Filippinerna." . . "Filipinas" . . "Filipinas." . "Philippine Islands" . . "Philippine Islands, Social conditions." . . "The Philippines : An economic and social geography" . . "The Philippines: an economic and social geography"@en . "The Philippines: an economic and social geography" . . . . . . . "The Philippines : an economic and social geography" . . . . . . . "The Philippines : an Economic and social geography" . . . . . . . . . . . . "The Philippines" . . . . . . . . . . . . . . . . . "Geografía económica de Filipinas." . . "Philippinen." . . "Wirtschaftsgeographie." . . "Sozialgeographie." . . "Sydøstasien" . . "Desarrollo social de Filipinas." . . "Philippines" . . "Philippines." . "Philippine Islands, Economic conditions." . . "Filipines" . .