This is a multidisciplinary book on Anthropology and Sociology. The textual part of this book covers the description of the Assam State and ethnology of the tribes and castes. The exhaustive bibliography has almost all the comprehensive inventory research source materials of monographs, articles, dissertations, reports, proceedings etc. of pre-and post-Independence period from the year 1792 to 1996. This book is perhaps the first ever scholarly effort to enlist the major up-to-date references, without any duplication, on different aspects of tribes and castes along with the textual part of description and appendices. The introductory chapter describes the main aspects of geography, agriculture, forest, geology, historical and political administration, district-councils etc. with ethnological aspects of about sixty communities. Besides these, this book provides a basic knowledge about its twenty-three districts and descriptive ideas on many other aspects of land and people of Assam. The exhaustive bibliographical part will definitely assist the scholars to locate the documents on different aspects of Assam and its people relating to anthropology, sociology, socio-religious, socio-political and socio-economic aspects, linguistics, demography, psychological facts etc. It has several detailed maps, photographs, sketches and tables which are the attractive features of this book. The appendices of glossary of words, lists of Scheduled Tribes and Castes and Chronology of Ahom and Koch reigns are also very helpful. The Author and Subject Index makes the consultation of this book easy. This will definitely serve as a ready reckoner. This can be used also as a general guidebook for all.