Tax-exempt status under section 10(23C)(iv) for Harijan Sevak Sangh confirmed by notification for specified assessment years. The Central Government, exercising powers under clause (iv) of sub section (23C) of section 10 of the Income tax Act, 1961, notifies Harijan Sevak Sangh, Delhi for the purposes of that provision for the assessment years 1979 80 to 1981 82, thereby recognizing its status for tax exemption eligibility under the specified clause.