Tax exemption recognition under section 10(23C)(iv) confirms institutional notification covering specified assessment years for compliance. Central Government notification recognizes Gurudev Biddha Peeth Ganeshpuri under clause (iv) of sub-section (23C) of section 10 of the Income-tax Act, treating the institution as notified for the purposes of that provision for the period corresponding to the assessment years 1980-81 to 1982-83.