50 ,
1. " " (1902)
2. ( ) ": " (1994)
3. "" (II )
4. " " (2001)
5.
6.
7. " " (1990)
8. " " (6 )
9. " " (1997)
10. ": " (1980)
11. . " " (1980)
12. " " (1987)
13. " ... " (1997)
14. " " (1936)
15. " "(1994)
16. "" (1993)
17. " " (1989)
18. ": " (1990)
19. - . " " (1998)
20. ( )
21. " : " (1992)
22. " " (1841)
23. ", " (1992)
24. " " (1959)
25. "" (1790)
26. " " (1978)
27. " : , IQ" (1995)
28. " , " (1992)
29. " " (1984)
30. " : " (1996)
31. " " (1987)
32. " 80/20: " (1998)
33. . ": " (1989)
34. - " " (V-III )
35. "" (1960)
36. " " (1954)
37. . - " : , , , " (1999)
38. " : " (1992)
39. " " (1963)
40. " " (1952)
41. . " : , " (1986)
42. . " "
43. " " (1957)
44. " " (1991)
45. " "" " (1925)
46. ", "(1991)
47. " " (1859)
48. "" (1955)
49. ", " (1854)
50. " " (1994)
1968 . , , . . , , . PR-, . , . . , ( ). 
