Charles John Colwell Orr Hastings (23 August 1858 in Markham Township, Canada – 17 January 1931 in Toronto) was an obstetrician and public health pioneer.
Charles John Colwell Orr Hastings (23 August 1858 in Markham Township, Canada – 17 January 1931 in Toronto) was an obstetrician and public health pioneer. (en)
Charles John Colwell Orr Hastings (23 August 1858 in Markham Township, Canada – 17 January 1931 in Toronto) was an obstetrician and public health pioneer. (en)