Bierwag, Gerald O. Duration analysis : manaing interest rate risk / Gerald O. Bierwag - Cambridge : Ballinger, c1987. - xvi,340 p. : 22 cm. ISBN: 0887301169 LCCN: Subjects--Topical Terms: Interest (economics) Bonds InvestmentMortgages LC Class. No.: HG4515.3 / .B54 1987 Dewey Class. No.: 332.82 / B588d