Section 35AC project specification extended after National Committee recommendation, maintaining eligibility for further assessment years. The Central Government, invoking sub section (1) read with clause (b) of the Explanation to section 35AC, re-specified the development and extension of educational, medical and sports facilities to rural areas in fifty villages around Ankleshwar as an eligible project for income-tax exemption purposes for a further two assessment years following the National Committee's recommendation that the project was properly executed.