книги Наука, техника, медицина Гуманитарные науки Общественные науки Социология Общая и теоретическая социология Социальные конфликты

Knife

Код 3443127

  • ISBN: 978-5-5090-5525-6

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Аннотация к книге "Knife"

High Quality Content by WIKIPEDIA articles! A knife (plural knives) is a cutting tool with an exposed cutting edge or blade, hand-held or otherwise, with or without a handle. Knife-like tools were used at least two-and-a-half million years ago, as evidenced by the Oldowan tools. Originally made of rock, bone, flint, and obsidian, knives have evolved in construction as technology has, with blades being made from bronze, copper, iron, steel, ceramics, and titanium. Many cultures have their unique version of the knife. Due to its role as humankind`s first tool, certain cultures have attached spiritual and religious significance to the knife.

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ISBN: 978-5-5090-5525-6

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Теория машин и механизмов ГОСТы, стандарты

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