Hans Zinsser Biography PDF

Hans Zinsser was an american physician, bacteriologist, and author,he isolated the Typhus Bacterium and developed a vaccine against the Typhoid …

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Bessie Coleman Biography PDF

Bessie Coleman was the 1st woman of African-American and Native American descent to earn her pilot’s license in the US, …

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Caravaggio Biography PDF

Caravaggio was a leading italian painter of the late 16th and early 17th century, and his work is known for …

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