Коротков, М.Г. Исследование состава фракций органического вещества чернозема типичного методом последовательной экстракции органическими растворителями и водой / М. Г. Коротков, В. П. Фролов. — с.67-72. — Электрон. текстовые дан. // Известия Тимирязевской сельскохозяйственной академии: Научно-теоретический журнал Российского государственного аграрного университета - МСХА имени К.А. Тимирязева. – 1982. – Вып. 4. — Коллекция: Журнал «Известия ТСХА». — http://elib.timacad.ru/dl/full/09-1982-4.pdf. - Загл. с титул. экрана. — <URL:http://elib.timacad.ru/dl/full/09-1982-4.pdf>.
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Period
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Read
|
Print
|
Copy
|
Open
|
Total
|
|
Year 2019
|
Quarter 3
|
July
|
4
|
0
|
3
|
0
|
7
|
|
August
|
3
|
0
|
0
|
0
|
3
|
|
September
|
4
|
0
|
4
|
0
|
8
|
|
Quarter 4
|
October
|
3
|
0
|
5
|
0
|
8
|
|
November
|
1
|
0
|
0
|
0
|
1
|
|
December
|
1
|
0
|
5
|
0
|
6
|
|
Year 2020
|
Quarter 1
|
January
|
3
|
0
|
6
|
0
|
9
|
|
February
|
0
|
0
|
1
|
0
|
1
|
|
March
|
5
|
0
|
2
|
0
|
7
|
|
Quarter 2
|
April
|
1
|
0
|
4
|
0
|
5
|
|
May
|
0
|
0
|
1
|
0
|
1
|
|
June
|
0
|
0
|
3
|
0
|
3
|
|
Quarter 3
|
July
|
0
|
0
|
2
|
0
|
2
|
|
August
|
1
|
0
|
10
|
0
|
11
|
|
September
|
2
|
0
|
3
|
0
|
5
|
|
Quarter 4
|
October
|
5
|
0
|
4
|
0
|
9
|
|
November
|
0
|
0
|
4
|
0
|
4
|
|
December
|
0
|
0
|
0
|
0
|
0
|
|
Year 2021
|
Quarter 1
|
January
|
5
|
0
|
2
|
0
|
7
|
|
February
|
3
|
0
|
0
|
0
|
3
|
|
March
|
0
|
0
|
0
|
0
|
0
|
|
Quarter 2
|
April
|
0
|
0
|
0
|
0
|
0
|
|
May
|
0
|
0
|
0
|
0
|
0
|
|
June
|
1
|
0
|
1
|
0
|
2
|
|
Quarter 3
|
July
|
6
|
0
|
2
|
0
|
8
|
|
August
|
4
|
0
|
2
|
0
|
6
|
|
September
|
0
|
0
|
0
|
0
|
0
|
|
Quarter 4
|
October
|
3
|
0
|
2
|
0
|
5
|
|
November
|
1
|
0
|
1
|
0
|
2
|
|
December
|
0
|
0
|
0
|
0
|
0
|
|
Year 2022
|
Quarter 1
|
January
|
0
|
0
|
2
|
0
|
2
|
|
February
|
3
|
0
|
1
|
0
|
4
|
|
March
|
1
|
0
|
0
|
0
|
1
|
|
Quarter 2
|
April
|
0
|
0
|
1
|
0
|
1
|
|
May
|
2
|
0
|
4
|
0
|
6
|
|
June
|
0
|
0
|
4
|
0
|
4
|
|
Quarter 3
|
July
|
3
|
0
|
1
|
0
|
4
|
|
August
|
2
|
0
|
3
|
0
|
5
|
|
September
|
1
|
0
|
0
|
0
|
1
|
|
Quarter 4
|
October
|
0
|
0
|
2
|
0
|
2
|
|
November
|
0
|
0
|
1
|
0
|
1
|
|
December
|
3
|
0
|
3
|
0
|
6
|
|
Year 2023
|
Quarter 1
|
January
|
0
|
0
|
1
|
0
|
1
|
|
February
|
0
|
0
|
3
|
0
|
3
|
|
March
|
1
|
0
|
2
|
0
|
3
|
|
Quarter 2
|
April
|
1
|
0
|
6
|
0
|
7
|
|
May
|
1
|
0
|
6
|
0
|
7
|
|
June
|
0
|
0
|
2
|
0
|
2
|
|
Quarter 3
|
July
|
3
|
0
|
2
|
0
|
5
|
|
August
|
1
|
0
|
6
|
0
|
7
|
|
September
|
0
|
0
|
2
|
0
|
2
|
|
Quarter 4
|
October
|
2
|
0
|
3
|
0
|
5
|
|
November
|
3
|
0
|
14
|
0
|
17
|
|
December
|
1
|
0
|
11
|
0
|
12
|
|
Year 2024
|
Quarter 1
|
January
|
0
|
0
|
3
|
0
|
3
|
|
February
|
2
|
0
|
5
|
0
|
7
|
|
March
|
0
|
0
|
2
|
0
|
2
|
|
Quarter 2
|
April
|
3
|
0
|
4
|
0
|
7
|
|
May
|
7
|
0
|
5
|
0
|
12
|
|
June
|
0
|
0
|
0
|
0
|
0
|
|
Total
|
96
|
0
|
166
|
0
|
262
|
