Notification under section 10(23C)(iv) designates Cancer Patients Aid Association for the provision's purposes affecting assessment treatment. Central Government, exercising the power under clause (iv) of sub-section (23C) of section 10 of the Income-tax Act, 1961, notifies Cancer Patients Aid Association for the purpose of that section, by Notification S.O.1032 dated 27-2-1981, recognising the association under the provision for assessment year 1982-83.