As long as diseases have been around, doctors, scientists, and scholars have tried to cure them. This book answers questions about vaccines and vaccinations, and covers our history with them, from the earliest smallpox "cures" to modern vaccinations. Readers will learn about controversies behind this preventative medical measure.
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语言 英语 ● 格式 PDF ● 网页 64 ● ISBN 9781448823529 ● 出版者 The Rosen Publishing Group, Inc ● 发布时间 2011 ● 下载 3 时 ● 货币 EUR ● ID 8667309 ● 复制保护 Adobe DRM
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