John Marrack

Scottish physician, born 1889

Italian physician and entomologist

British doctor

British physician and army officer

British physician and surgeon

English cricketer and British Army officer

Botanist

Medical doctor and British Quaker missionary.

British physician

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Scottish biologist, pharmacologist

Scottish nutritionist, Director-General of the United Nations Food and Agriculture Organization

British scientist and explorer

British psychologist

British doctor

British entomologist

British physicist

British veterinarian pathologist

English physician

British immunologist