Ravenstein, E.G.. World Encyclopaedia of Nations And Nationalities Vol-9,Part-I: Universal Geography with Illustrations And Maps / Edited by E.G. Ravenstein And A.H. Keane. - 1st ed / - New Delhi : Discovery Publishing House , 1985 - VIII,262p : ISBN: 81-7141-166-5(S) Subjects--Topical Terms: Encyclopaedia Dewey Class. No.: W94.1K / N9.9.1