april 1959

april 1959: 17 companies

1. april 1959 2 companies

7. april 1959 1 companies

9. april 1959 1 companies

10. april 1959 1 companies

11. april 1959 2 companies

14. april 1959 2 companies

16. april 1959 1 companies

17. april 1959 3 companies

21. april 1959 1 companies

22. april 1959 1 companies

28. april 1959 2 companies