TY  - BOOK
AU  - Harris,Raymond
AU  - Frankel,Lawrence J
TI  - Guide to fitness after fifty
SN  - 0306309955 :
U1  - 613.7 
PY  - 1977///
CY  - New York
PB  - Plenum Press
KW  - Physical fitness for middle-aged persons
KW  - Exercise for middle-aged persons
KW  - Exercise
KW  - Physiological aspects
KW  - Aging
KW  - Physical fitness
KW  - Exertion
KW  - In old age
KW  - Exercise therapy
ER  -