april 1971

april 1971: 241 companies

2. april 1971 15 companies

4. april 1971 3 companies

5. april 1971 5 companies

6. april 1971 11 companies

8. april 1971 17 companies

18. april 1971 48 companies

20. april 1971 1 companies

23. april 1971 14 companies

25. april 1971 29 companies

26. april 1971 46 companies

27. april 1971 43 companies

28. april 1971 2 companies

30. april 1971 7 companies