Season 12

01 Episode 1 Episode 125th December 1972 02 Episode 2 Episode 225th December 1972 03 Episode 3 Episode 325th December 1972 04 Episode 4 Episode 420th February 1973 05 Episode 5 Episode 520th February 1973 06 Episode 6 Episode 620th February 1973 07 Episode 7 Episode 720th February 1973 08 Episode 8 Episode 813th March 1973 09 Episode 9 Episode 913th March 1973 10 Episode 10 Episode 1013th March 1973 11 Episode 11 Episode 1124th April 1973 12 Episode 12 Episode 1224th April 1973 13 Episode 13 Episode 1324th April 1973 14 Episode 14 Episode 1415th May 1973 15 Episode 15 Episode 1515th May 1973 16 Episode 16 Episode 1615th May 1973 17 Episode 17 Episode 1715th May 1973 18 Episode 18 Episode 1812th June 1973 19 Episode 19 Episode 1912th June 1973 20 Episode 20 Episode 2012th June 1973 21 Episode 21 Episode 2112th June 1973 22 Episode 22 Episode 229th July 1973 23 Episode 23 Episode 239th July 1973 24 Episode 24 Episode 249th July 1973 25 Episode 25 Episode 259th July 1973 26 Episode 26 Episode 2617th August 1973 27 Episode 27 Episode 2717th August 1973 28 Episode 28 Episode 2817th August 1973 29 Episode 29 Episode 2911th September 1973 30 Episode 30 Episode 3011th September 1973 31 Episode 31 Episode 3111th September 1973 32 Episode 32 Episode 3218th October 1973 33 Episode 33 Episode 3318th October 1973 34 Episode 34 Episode 3418th October 1973 35 Episode 35 Episode 3518th October 1973 36 Episode 36 Episode 3619th November 1973 37 Episode 37 Episode 3719th November 1973 38 Episode 38 Episode 3819th November 1973 39 Episode 39 Episode 3919th November 1973 40 Episode 40 Episode 4019th December 1973 41 Episode 41 Episode 4119th December 1973 42 Episode 42 Episode 4219th December 1973