april 1956

april 1956: 35 companies

3. april 1956 6 companies

4. april 1956 1 companies

5. april 1956 2 companies

6. april 1956 1 companies

9. april 1956 1 companies

10. april 1956 1 companies

12. april 1956 4 companies

13. april 1956 1 companies

16. april 1956 1 companies

18. april 1956 3 companies

19. april 1956 2 companies

20. april 1956 4 companies

23. april 1956 3 companies

25. april 1956 3 companies

27. april 1956 1 companies

30. april 1956 1 companies