Романов, Михаил Васильевич. — Экология [Электронный ресурс]: онлайн-курс / М. В. Романов, М. Б. Шилин, М. Ю. Андрианова; Санкт-Петербургский политехнический университет Петра Великого, Инженерно-строительный институт. — Санкт-Петербург, 2018. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — <URL:https://openedu.ru/course/spbstu/ECOLOGY/>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2018 | Quarter 1 | 0 | 0 | 0 | 3 | 3 |
| Quarter 2 | 0 | 0 | 0 | 3 | 3 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 1 | 1 | |
| Year 2019 | Quarter 1 | 0 | 0 | 0 | 4 | 4 |
| Quarter 2 | 0 | 0 | 0 | 5 | 5 | |
| Quarter 3 | 0 | 0 | 0 | 1 | 1 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2020 | Quarter 1 | 0 | 0 | 0 | 2 | 2 |
| Quarter 2 | 0 | 0 | 0 | 7 | 7 | |
| Quarter 3 | 0 | 0 | 0 | 1 | 1 | |
| Quarter 4 | 0 | 0 | 0 | 2 | 2 | |
| Year 2021 | Quarter 1 | 0 | 0 | 0 | 1 | 1 |
| Quarter 2 | 0 | 0 | 0 | 4 | 4 | |
| Quarter 3 | 0 | 0 | 0 | 1 | 1 | |
| Quarter 4 | 0 | 0 | 0 | 1 | 1 | |
| Year 2022 | Quarter 1 | 0 | 0 | 0 | 2 | 2 |
| Quarter 2 | 0 | 0 | 0 | 5 | 5 | |
| Quarter 3 | 0 | 0 | 0 | 4 | 4 | |
| Quarter 4 | 0 | 0 | 0 | 2 | 2 | |
| Year 2023 | Quarter 1 | 0 | 0 | 0 | 3 | 3 |
| Quarter 2 | 0 | 0 | 0 | 2 | 2 | |
| Quarter 3 | 0 | 0 | 0 | 4 | 4 | |
| Quarter 4 | 0 | 0 | 0 | 5 | 5 | |
| Year 2024 | Quarter 1 | 0 | 0 | 0 | 4 | 4 |
| Quarter 2 | 0 | 0 | 0 | 11 | 11 | |
| Quarter 3 | 0 | 0 | 0 | 10 | 10 | |
| Quarter 4 | 0 | 0 | 0 | 10 | 10 | |
| Total | 0 | 0 | 0 | 98 | 98 | |