TY - BOOK T1 - Fitness after 50 / DA - 1987. CY - New York : AU - DeVries, Herbert A. AU - Hales, Dianne, ET - 1st paperback ed. CN - RA781 .D48 1987 CN - RA781 PB - Scribner, PP - New York : PY - 1987. N1 - Includes index. ID - 121714 KW - Physical fitness for older people. KW - Exercise for older people. KW - Middle age KW - Older people SN - 0684179229 (pbk.) : TI - Fitness after 50 / ER -