Episodes (48)
1. Episode 1
Aired 6 March 1971
2. Episode 2
Aired 13 March 1971
3. Episode 3
Aired 20 March 1971
4. Episode 4
Aired 27 March 1971
5. Episode 5
Aired 3 April 1971
6. Episode 6
Aired 10 April 1971
7. Episode 7
Aired 17 April 1971
8. Episode 8
Aired 24 April 1971
9. Episode 9
Aired 1 May 1971
10. Episode 10
Aired 8 May 1971
11. Episode 11
Aired 15 May 1971
12. Episode 12
Aired 22 May 1971
13. Episode 13
Aired 29 May 1971
14. Episode 14
Aired 6 June 1971
15. Episode 15
Aired 13 June 1971
16. Episode 16
Aired 20 July 1971
17. Episode 17
Aired 27 July 1971
18. Episode 18
Aired 3 August 1971
19. Episode 19
Aired 10 August 1971
20. Episode 20
Aired 17 August 1971
21. Episode 21
Aired 24 August 1971
22. Episode 22
Aired 31 August 1971
23. Episode 23
Aired 6 September 1971
24. Episode 24
Aired 14 September 1971
25. Episode 25
Aired 21 September 1971
26. Episode 26
Aired 1 October 1971
27. Episode 27
Aired 8 October 1971
28. Episode 28
Aired 15 October 1971
29. Episode 29
Aired 22 October 1971
30. Episode 30
Aired 29 October 1971
31. Episode 31
Aired 5 November 1971
32. Episode 32
Aired 12 November 1971
33. Episode 33
Aired 19 November 1971
34. Episode 34
Aired 26 November 1971
35. Episode 35
Aired 3 December 1971
36. Episode 36
Aired 18 January 1972
37. Episode 37
Aired 25 January 1972
38. Episode 38
Aired 1 February 1972
39. Episode 39
Aired 8 February 1972
40. Episode 40
Aired 15 February 1972
300. Episode 300
Aired 1 May 1977
400. Episode 400
Aired 1 April 1979
500. Episode 500
Aired 22 March 1981
636. Episode 636
Aired 22 July 1983
680. Episode 680
Aired 18 October 1984
700. Episode 700
Aired 18 September 1985
800. Episode 800
Aired 26 November 1987
880. Episode 880
Aired 12 October 1989