Roy, Ravindra Nair. Encyclopedia of sociology : Indian social system (vol.-1) / by Ravindra Nair Roy…[et.al] - Delhi: Signature Books International, 2016. - viii, 280p. ISBN: 9789385622069 Subjects--Topical Terms: Eco-social systemSocial systemSociologySociology Dewey Class. No.: 301.03 / ROY/E