Section 10(23C)(iv) notification recognises a society for tax-exempt treatment under Income-tax Act for specified assessment years. The Central Government, invoking clause (iv) of sub section (23C) of section 10 of the Income tax Act, notifies Bharatiya Bhasha Parishad, Calcutta as eligible under that clause for the assessment years 1987-88 and 1988-89, thereby recording the institution's entitlement to the tax status provided by that provision.