Section 10(23C)(iv) notification recognizes Exhibition Society Hyderabad for tax exemption under the Income tax Act for specified years. The Central Government, exercising the power under sub-clause (iv) of clause (23C) of section 10 of the Income-tax Act, notifies 'Exhibition Society, Hyderabad' for the purposes of that sub-clause for the assessment years 1984-85 to 1988-89, thereby recognizing the society within the statutory tax-exemption framework.