-
181
-
182
-
183
-
184
-
185per United Nation. Department of Economic and Social Affairs
Publicat 2002Llibre -
186
-
187
-
188
-
189per Gudeman, Stephen
Publicat 2001Llibre -
190
-
191
-
192
-
193
-
194Article
-
195per Boswell, Terry
Publicat 2000Llibre -
196per Dornbusch, Rudiger
Publicat 2000Llibre -
197
-
198
-
199
-
200