Рябошук, Сергей Владимирович. Сырьевая база металлургии [Электронный ресурс]: учебное пособие / С. В. Рябошук, П. В. Ковалев, А. А. Кур; Санкт-Петербургский политехнический университет Петра Великого. — Электрон. текстовые дан. (1 файл : 1,26 Мб). — Санкт-Петербург, 2018. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/s18-141.pdf>. — <URL:http://doi.org/10.18720/SPBPU/2/s18-141>.
| Period | Read | Copy | Open | Total | |||
|---|---|---|---|---|---|---|---|
| Year 2018 | Quarter 3 | July | 30 | 0 | 39 | 0 | 69 |
| August | 19 | 0 | 27 | 0 | 46 | ||
| September | 21 | 0 | 17 | 0 | 38 | ||
| Quarter 4 | October | 14 | 0 | 16 | 0 | 30 | |
| November | 5 | 0 | 29 | 0 | 34 | ||
| December | 4 | 0 | 16 | 0 | 20 | ||
| Year 2019 | Quarter 1 | January | 4 | 0 | 57 | 0 | 61 |
| February | 4 | 0 | 55 | 0 | 59 | ||
| March | 2 | 0 | 35 | 0 | 37 | ||
| Quarter 2 | April | 10 | 0 | 34 | 0 | 44 | |
| May | 4 | 0 | 40 | 0 | 44 | ||
| June | 2 | 0 | 42 | 0 | 44 | ||
| Quarter 3 | July | 0 | 0 | 28 | 0 | 28 | |
| August | 5 | 0 | 12 | 0 | 17 | ||
| September | 1 | 0 | 18 | 0 | 19 | ||
| Quarter 4 | October | 2 | 0 | 32 | 0 | 34 | |
| November | 1 | 0 | 37 | 0 | 38 | ||
| December | 7 | 0 | 64 | 0 | 71 | ||
| Year 2020 | Quarter 1 | January | 1 | 0 | 24 | 0 | 25 |
| February | 0 | 0 | 23 | 0 | 23 | ||
| March | 8 | 0 | 16 | 0 | 24 | ||
| Quarter 2 | April | 6 | 0 | 1 | 0 | 7 | |
| May | 4 | 0 | 0 | 0 | 4 | ||
| June | 4 | 0 | 0 | 0 | 4 | ||
| Quarter 3 | July | 2 | 0 | 0 | 0 | 2 | |
| August | 1 | 0 | 0 | 0 | 1 | ||
| September | 4 | 0 | 0 | 0 | 4 | ||
| Quarter 4 | October | 5 | 0 | 0 | 0 | 5 | |
| November | 2 | 0 | 18 | 0 | 20 | ||
| December | 4 | 0 | 15 | 0 | 19 | ||
| Year 2021 | Quarter 1 | January | 4 | 0 | 7 | 0 | 11 |
| February | 3 | 0 | 9 | 0 | 12 | ||
| March | 1 | 0 | 18 | 0 | 19 | ||
| Quarter 2 | April | 2 | 0 | 8 | 0 | 10 | |
| May | 2 | 0 | 9 | 0 | 11 | ||
| June | 15 | 0 | 8 | 0 | 23 | ||
| Quarter 3 | July | 6 | 0 | 3 | 0 | 9 | |
| August | 3 | 0 | 11 | 0 | 14 | ||
| September | 2 | 0 | 7 | 0 | 9 | ||
| Quarter 4 | October | 2 | 0 | 17 | 0 | 19 | |
| November | 0 | 0 | 18 | 0 | 18 | ||
| December | 1 | 0 | 13 | 0 | 14 | ||
| Year 2022 | Quarter 1 | January | 2 | 0 | 16 | 0 | 18 |
| February | 0 | 0 | 47 | 0 | 47 | ||
| March | 6 | 0 | 14 | 0 | 20 | ||
| Quarter 2 | April | 1 | 0 | 21 | 0 | 22 | |
| May | 6 | 0 | 6 | 0 | 12 | ||
| June | 1 | 0 | 21 | 0 | 22 | ||
| Quarter 3 | July | 3 | 0 | 13 | 0 | 16 | |
| August | 1 | 0 | 7 | 0 | 8 | ||
| September | 5 | 0 | 6 | 0 | 11 | ||
| Quarter 4 | October | 5 | 0 | 7 | 0 | 12 | |
| November | 9 | 0 | 18 | 0 | 27 | ||
| December | 13 | 0 | 17 | 0 | 30 | ||
| Year 2023 | Quarter 1 | January | 3 | 0 | 29 | 0 | 32 |
| February | 1 | 0 | 16 | 0 | 17 | ||
| March | 5 | 0 | 23 | 0 | 28 | ||
| Quarter 2 | April | 3 | 0 | 17 | 0 | 20 | |
| May | 5 | 0 | 30 | 0 | 35 | ||
| June | 1 | 0 | 24 | 0 | 25 | ||
| Quarter 3 | July | 4 | 0 | 8 | 0 | 12 | |
| August | 2 | 0 | 15 | 0 | 17 | ||
| September | 1 | 0 | 21 | 0 | 22 | ||
| Quarter 4 | October | 4 | 0 | 26 | 0 | 30 | |
| November | 6 | 0 | 17 | 0 | 23 | ||
| December | 3 | 0 | 29 | 0 | 32 | ||
| Year 2024 | Quarter 1 | January | 1 | 0 | 37 | 0 | 38 |
| February | 1 | 0 | 24 | 0 | 25 | ||
| March | 0 | 0 | 33 | 0 | 33 | ||
| Quarter 2 | April | 8 | 0 | 45 | 0 | 53 | |
| May | 16 | 0 | 47 | 0 | 63 | ||
| June | 3 | 0 | 46 | 0 | 49 | ||
| Quarter 3 | July | 10 | 0 | 27 | 0 | 37 | |
| August | 5 | 0 | 21 | 0 | 26 | ||
| September | 12 | 0 | 19 | 0 | 31 | ||
| Quarter 4 | October | 11 | 0 | 24 | 0 | 35 | |
| November | 12 | 0 | 34 | 0 | 46 | ||
| December | 4 | 0 | 22 | 0 | 26 | ||
| Year 2025 | Quarter 1 | January | 5 | 0 | 23 | 0 | 28 |
| February | 11 | 0 | 21 | 0 | 32 | ||
| March | 8 | 0 | 22 | 0 | 30 | ||
| Quarter 2 | April | 5 | 0 | 25 | 0 | 30 | |
| May | 9 | 0 | 18 | 0 | 27 | ||
| June | 10 | 0 | 25 | 0 | 35 | ||
| Quarter 3 | July | 14 | 0 | 29 | 0 | 43 | |
| August | 7 | 0 | 26 | 0 | 33 | ||
| September | 11 | 0 | 60 | 0 | 71 | ||
| Quarter 4 | October | 14 | 0 | 32 | 0 | 46 | |
| November | 1 | 0 | 1 | 0 | 2 | ||
| Total | 485 | 0 | 1,932 | 0 | 2,417 | ||