april 1979

april 1979: 711 companies

2. april 1979 38 companies

3. april 1979 41 companies

4. april 1979 47 companies

5. april 1979 37 companies

6. april 1979 27 companies

9. april 1979 32 companies

10. april 1979 61 companies

11. april 1979 31 companies

12. april 1979 23 companies

13. april 1979 1 companies

17. april 1979 9 companies

18. april 1979 48 companies

19. april 1979 31 companies

20. april 1979 70 companies

23. april 1979 64 companies

24. april 1979 41 companies

26. april 1979 33 companies

27. april 1979 36 companies

30. april 1979 41 companies