In exercise of the powers conferred by sub-clause (iv) of clause (23C) of section 10 of the Income-tax Act, 1961 (43 of 1961), the Central Government hereby notifies Bharatiya Bhasha Parishad, Calcutta, for the purpose of the said sub-clause for the assessment years 1990-91 to 1992-93 subject to the following conditions, namely...