Tax exemption notification under section 10(23C)(iv) notifies Jhargram Leprosy Project for specified assessment years. Central Government notifies Jhargram Leprosy Project, Calcutta as qualifying under the clause permitting notification of institutions for the purposes of the Income-tax Act, 1961, designating the Project for the period covered by the assessment years 1981-82 and 1982-83 by Notification No. S.O.175 dated 23-12-1983.