Biomedical subjects
R D DEFRIES
Publications and source records attributed to R D DEFRIES.
The Alberta department of public health.
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The department of health of Prince Edward Island.
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The Ontario Department of Health.
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Dr. Edward Playter--a vision fulfilled.
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The Saskatchewan Department of Public Health.
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The New Brunswick Department of Health and Social Services.
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The Manitoba Department of Health and Public Welfare.
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The British Columbia Department of Health and Welfare.
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Present status of poliomyelitis vaccination.
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Postgraduate teaching in public health in the University of Toronto, 1913, 1955.
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Donald Thomas Fraser (1888-1954).
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Immunization poliomyelitis.
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Connaught Medical Laboratories, University of Toronto, Canada.
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