April 1978

April 1978: 448 companies

3. April 1978 18 companies

4. April 1978 19 companies

5. April 1978 17 companies

6. April 1978 23 companies

7. April 1978 35 companies

10. April 1978 20 companies

11. April 1978 23 companies

12. April 1978 21 companies

13. April 1978 19 companies

14. April 1978 21 companies

17. April 1978 21 companies

18. April 1978 20 companies

19. April 1978 20 companies

20. April 1978 31 companies

21. April 1978 20 companies

24. April 1978 27 companies

26. April 1978 27 companies

27. April 1978 35 companies

28. April 1978 31 companies