Strelets, K.I. Purification of the air from the industrial emissions with the help of cyclone dust collectors [Электронный ресурс] / K.I. Strelets. — Электрон. текстовые дан. (1 файл : 565Кб). — СПб., 2005. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Adobe Acrobat Reader 4.0. — <URL:http://elib.spbstu.ru/dl/904.pdf>.
|
Period
|
Read
|
Print
|
Copy
|
Open
|
Total
|
|
Year 2012
|
22
|
0
|
21
|
0
|
43
|
|
Year 2013
|
40
|
0
|
31
|
0
|
71
|
|
Year 2014
|
27
|
0
|
15
|
0
|
42
|
|
Year 2015
|
40
|
0
|
29
|
0
|
69
|
|
Year 2016
|
50
|
0
|
35
|
0
|
85
|
|
Year 2017
|
35
|
0
|
97
|
0
|
132
|
|
Year 2018
|
40
|
0
|
121
|
0
|
161
|
|
Year 2019
|
27
|
0
|
26
|
0
|
53
|
|
Year 2020
|
43
|
0
|
25
|
0
|
68
|
|
Year 2021
|
35
|
0
|
19
|
0
|
54
|
|
Year 2022
|
25
|
0
|
20
|
0
|
45
|
|
Year 2023
|
21
|
0
|
29
|
0
|
50
|
|
Year 2024
|
9
|
0
|
8
|
0
|
17
|
|
Total
|
414
|
0
|
476
|
0
|
890
|
