Amri, Laroussi The concept of 'umran : the heuristic knot in Ibn Khaldun Laroussi Amri - p. [351]-361 Bibliogr. p. 361 Subjects--Personal Names: Ibn Khaldoun, Abderrahmane ibn Muhammad (1332-1406) ابن خلدون، عبد الرحمن بن محمد بن محمد (1332-1406) Subjects--Topical Terms: SOCIOLOGIEURBANISME Dewey Class. No.: 189.51