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Мамонтов, Владимир Григорьевич. Практикум по химии почв [электронный ресурс]: Учебное пособие / В. Г. Мамонтов, А. А. Гладков. — 1. — Москва: Издательство "ФОРУМ", 2015 — 272 с. — ВО - Бакалавриат. — <URL:https://znanium.com/catalog/document?id=240244>. — <URL:https://znanium.com/cover/0475/475296.jpg>.
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