The Inventions of Martha Coston 在线电子书 图书标签:
发表于2024-12-30
The Inventions of Martha Coston 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
At a time when women did little more than keep house and raise families, Martha Coston was busy saving lives by perfecting the night signal flare. Coston's signal flare was an important tool for the Union army during the Civil War. Compelling text, photos, and patent drawings show readers how this young woman went from widower to inventor, businessperson, and author.
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The Inventions of Martha Coston 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024