september 1957

september 1957: 70 companies

2 september 1957 5 companies

3 september 1957 1 companies

4 september 1957 8 companies

5 september 1957 2 companies

6 september 1957 2 companies

10 september 1957 2 companies

11 september 1957 6 companies

12 september 1957 2 companies

13 september 1957 2 companies

16 september 1957 3 companies

18 september 1957 4 companies

19 september 1957 5 companies

20 september 1957 7 companies

23 september 1957 4 companies

24 september 1957 1 companies

25 september 1957 7 companies

26 september 1957 2 companies

27 september 1957 5 companies

30 september 1957 2 companies