00403cam a2200157 a 4500020001500000082001600015100002000031245002200051250000800073260007100081300002500152500002000177650001700197654001500214700001600229  a0932883974  a616.12bEME1 aEmery, Robert W14aThe aortic valve   aNil  aPhiladelphia bHanley & Belfus aSt. Louis bMosby-Year Bookc1991  axiii, 336 p. bill.   aIncludes index. 2aAortic Valve  aCardiology1 aArom, Kit V