TY - BOOK AU - Bierwag,Gerald O. TI - Duration analysis: manaing interest rate risk SN - 0887301169 AV - HG4515.3 .B54 1987 U1 - 332.82 PY - 1987/// CY - Cambridge PB - Ballinger KW - Interest (economics) Bonds Investment KW - Mortgages ER -