Research institution approval requires separate research accounts, annual audited returns and timely extension applications to retain tax benefits. The Skin and Leprosy Research Foundation, Bhagalpur, Bihar is approved as a research association for income-tax purposes subject to maintaining separate research accounts, filing annual scientific-activity returns by 31 May, submitting audited annual accounts and balance-sheet with copies to the Central Board of Direct Taxes and the Commissioner by 30 June, and applying for extension at least three months before approval expiry; late applications may be rejected. Approval effective 8 June 1987 to 31 March 1989.