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Усов, Борис Александрович. Химия и технология цемента [электронный ресурс]: Учебное пособие / Б. А. Усов. — 2. — Москва: ООО "Научно-издательский центр ИНФРА-М", 2015 — 158 с. — ВО - Бакалавриат. — <URL:https://znanium.com/catalog/document?id=184901>. — <URL:https://znanium.com/cover/0499/499827.jpg>.
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