april 1977

april 1977: 860 companies

1. april 1977 31 companies

4. april 1977 39 companies

5. april 1977 35 companies

6. april 1977 48 companies

7. april 1977 51 companies

9. april 1977 1 companies

10. april 1977 1 companies

12. april 1977 5 companies

13. april 1977 46 companies

14. april 1977 56 companies

15. april 1977 39 companies

18. april 1977 40 companies

19. april 1977 58 companies

20. april 1977 36 companies

21. april 1977 96 companies

22. april 1977 58 companies

26. april 1977 41 companies

27. april 1977 59 companies

28. april 1977 63 companies

29. april 1977 57 companies