Research institution approval under section 35(1)(iii) requires separate research accounts and annual audited returns for compliance. Approval is granted to the Centre for Research, Planning and Action, New Delhi, as an Institution under clause (iii) of sub section (1) of section 35, effective 1 April 1988 to 31 March 1989, subject to maintaining separate research accounts, filing annual returns of scientific research activities by 31 May, submitting audited accounts and balance sheet to the prescribed authority by 30 June with copies to tax authorities, and applying for extension before approval expiry.