Pranesachar , C. R. Problem primer for the olympiad.-2nd ed. C.R. Pranesachar, B .J. Venkatachala and C. S. Yogananda. - 2nd ed. - Bangalore: Prism, 2001 - xi, 129p. Subjects--Index Terms: Mathematics ,problems, exercises etc. Universal Decimal Class. No.: 51(076.2) / PRA