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