Approval under section 35(1)(ii) confirms recognition of a research institution for tax purposes within a fixed period. Approval of the Vanaspathi Manufacturers Association Oilseeds Research and Development Institute by the Indian Council of Agricultural Research is recorded for the purposes of section 35(1)(ii) of the Income tax Act, 1961, establishing its recognition by the prescribed authority under that clause. The notification limits that recognition to a specified two year period and provides the official notification number and date for administrative reference.