Today In History 2025 Birthdays Of Scientists. Browse famous birthdays sorted by profession, birth place and birth region. Polish virologist and immunologist who discovered the first vaccine against poliomyelitis which was based on oral administration of attenuated.
Maya civilisation (9) 9 posts no categories yet. Polish virologist and immunologist who discovered the first vaccine against poliomyelitis which was based on oral administration of attenuated.
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