Senescence: the last half of life. 1922.
Hall
G Stanley
GS
D000368:Aged; D000375:Aging / Q000502:physiology / Q000523:psychology*; D005853:Geriatrics / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D008016:Life Change Events; D008875:Middle Aged; D011593:Psychology, Social / Q000266:history*