Income tax exemption notification recognizes Madhya Pradesh Stock Exchange for specified assessment years under section 10(23C)(iv) law. The Central Government, by Notification S.O.111 dated 24-9-1987, designates the Madhya Pradesh Stock Exchange as an entity notified under section 10(23C)(iv) of the Income-tax Act for the assessment years 1985-86 to 1988-89, thereby classifying it within the tax-exempt category contemplated by that provision for those years.