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Филин, В. И. История агрохимии [Электронный ресурс] / В. И. Филин. — Волгоград: Волгоградский ГАУ, 2016 — 240 с. — Книга из коллекции Волгоградский ГАУ - Ветеринария и сельское хозяйство. — <URL:https://e.lanbook.com/book/100800>. — <URL:https://e.lanbook.com/img/cover/book/100800.jpg>.
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| Last day | 0 | 0 | 0 | 0 | 0 |
| Last 30 days | 0 | 0 | 0 | 0 | 0 |
| Last 365 days | 0 | 0 | 0 | 9 | 9 |
| All time | 0 | 0 | 0 | 9 | 9 |