april 1952

april 1952: 25 companies

1. april 1952 16 companies

5. april 1952 1 companies

9. april 1952 2 companies

14. april 1952 1 companies

15. april 1952 1 companies

20. april 1952 1 companies

21. april 1952 1 companies

24. april 1952 1 companies

28. april 1952 1 companies