Экология Северо-запада РФ [Электронный ресурс]. — Электрон. текстовые дан. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Internet Explorer 6.0. — <URL:http://dvzoosad.ru/index.php/ekologiya/item/397-ekologiya-severo-zapada-rf>.
| Period | Read | Copy | Open | Total | ||
|---|---|---|---|---|---|---|
| Year 2016 | Quarter 3 | 0 | 0 | 0 | 2 | 2 |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2017 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 1 | 1 | |
| Quarter 3 | 0 | 0 | 0 | 1 | 1 | |
| Quarter 4 | 0 | 0 | 0 | 1 | 1 | |
| Year 2018 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 1 | 1 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| 2019 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2020 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 2 | 2 | |
| Year 2021 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 2 | 2 | |
| Quarter 3 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 4 | 0 | 0 | 0 | 0 | 0 | |
| Year 2022 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 0 | 0 | |
| Quarter 3 | 0 | 0 | 0 | 1 | 1 | |
| Quarter 4 | 0 | 0 | 0 | 1 | 1 | |
| Year 2023 | Quarter 1 | 0 | 0 | 0 | 0 | 0 |
| Quarter 2 | 0 | 0 | 0 | 3 | 3 | |
| Quarter 3 | 0 | 0 | 0 | 7 | 7 | |
| Quarter 4 | 0 | 0 | 0 | 18 | 18 | |
| Year 2024 | Quarter 1 | 0 | 0 | 0 | 2 | 2 |
| Quarter 2 | 0 | 0 | 0 | 6 | 6 | |
| Quarter 3 | 0 | 0 | 0 | 7 | 7 | |
| Quarter 4 | 0 | 0 | 0 | 2 | 2 | |
| Total | 0 | 0 | 0 | 57 | 57 | |