Section 67(2) in The Bihar Primary and Middle Education Rules, 1961
(2)A similar set of revenue thana maps shall be prepared and bound in a book form. One book for each map shall be sent to the Director for record. These sets of maps should be sent by the Director to the District Superintendent in April each year and the Superintendent should return them to the Director latest by the end of May after filling the particulars corrected up to the 31st March of the year.
