Youtube-Kanäle wie KOREPETYCJE z BIOLOGII i CHEMII




1,540,000 2.64%

3,390,000 1.13%

32,600 4.37%

33,200 3.12%

760,000 1.68%

10,500,000 3.02%

15,500 2.03%




524,000 2.7%

835,000 2.77%

9,620 2.07%



1,020,000 3.13%

3,210,000 2.78%


7,470 0.92%

9,270 1.44%

22,700 6.1%

59,400 3.56%