TY  - RPRT
TI  - Simple physical activities for the elderly.
AU  - R L Comstock
AU  - R L Mayers
AU  - J C Folsom
PY  - 1969
DO  - 10.1176/ps.20.12.377
UR  - https://pubmed.ncbi.nlm.nih.gov/5351716/
ID  - 5351716
ER  -