How old is the earth? (Guide leaflet, no. 75)

Reeds, Chester A. (Chester Albert), 1882-1968.2020-05-112020-05-111931http://digitallibrary.amnh.org/handle/2246/721020 p. ill. (1 col.) ; 25 cm.Reprinted from Natural history, March-April, 1931.en-USEarth -- Age.How old is the earth? (Guide leaflet, no. 75)Other