april 1959

april 1959: 211 companies

2 april 1959 8 companies

3 april 1959 4 companies

5 april 1959 4 companies

6 april 1959 6 companies

7 april 1959 10 companies

8 april 1959 7 companies

9 april 1959 10 companies

12 april 1959 14 companies

13 april 1959 14 companies

14 april 1959 9 companies

15 april 1959 10 companies

16 april 1959 16 companies

17 april 1959 13 companies

19 april 1959 10 companies

20 april 1959 11 companies

21 april 1959 8 companies

22 april 1959 9 companies

26 april 1959 15 companies

27 april 1959 18 companies

28 april 1959 6 companies

30 april 1959 9 companies