Out of the jurisdiction of the state in the field of there are some laws of co-ordinating multi state fields. There was are to be easily explained and made known to the laymen. This book works this purpose. This is not done clause wise as it is available in the law-books, but is done subject wise. There is a need of ammendment in this law, as in 97th ammendment. Laws should be easily understand by people so as to get proper effect and benefit. This book has worked in this direction.