april 1961

april 1961: 46 companies

1 april 1961 1 companies

4 april 1961 4 companies

5 april 1961 2 companies

6 april 1961 2 companies

7 april 1961 5 companies

10 april 1961 3 companies

12 april 1961 2 companies

13 april 1961 1 companies

14 april 1961 1 companies

17 april 1961 2 companies

18 april 1961 2 companies

19 april 1961 2 companies

20 april 1961 4 companies

21 april 1961 1 companies

24 april 1961 2 companies

25 april 1961 3 companies

26 april 1961 3 companies

27 april 1961 3 companies

28 april 1961 3 companies