april 1972

april 1972: 242 companies

2. april 1972 1 companies

3. april 1972 6 companies

4. april 1972 17 companies

6. april 1972 6 companies

7. april 1972 4 companies

9. april 1972 10 companies

10. april 1972 13 companies

11. april 1972 7 companies

12. april 1972 8 companies

13. april 1972 10 companies

14. april 1972 8 companies

16. april 1972 3 companies

17. april 1972 12 companies

18. april 1972 31 companies

20. april 1972 22 companies

23. april 1972 23 companies

24. april 1972 6 companies

25. april 1972 15 companies

26. april 1972 16 companies

27. april 1972 11 companies

28. april 1972 4 companies

30. april 1972 9 companies