april 1971

april 1971: 68 companies

1 april 1971 6 companies

5 april 1971 2 companies

6 april 1971 3 companies

7 april 1971 2 companies

8 april 1971 3 companies

10 april 1971 1 companies

15 april 1971 4 companies

16 april 1971 2 companies

17 april 1971 1 companies

19 april 1971 2 companies

20 april 1971 6 companies

21 april 1971 3 companies

22 april 1971 6 companies

23 april 1971 4 companies

24 april 1971 2 companies

26 april 1971 4 companies

27 april 1971 3 companies

28 april 1971 4 companies

29 april 1971 5 companies

30 april 1971 5 companies