april 1970

april 1970: 54 companies

2. april 1970 1 companies

4. april 1970 6 companies

6. april 1970 5 companies

9. april 1970 6 companies

13. april 1970 10 companies

14. april 1970 3 companies

17. april 1970 11 companies

18. april 1970 1 companies

21. april 1970 5 companies

23. april 1970 6 companies