HASTINGS, CHARLES JOHN COLWELL ORR (Charles John Oliver)
Nasmith*, director of laboratories for Toronto’s health department [see Charles John Colwell Orr
, Charles John Colwell Orr Hastings, the New York–based Rockefeller
, Charles John Colwell Orr Hastings, and Thomas Joseph Workman
the field of public health such as Edward Playter*, Charles John Colwell Orr
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