Season 12 aired between 04 Jan 1971 and 29 Dec 1971, 9 episodes.
Episodes
E01
Episode 1040 (4th January 1971)
04 Jan 1971
E16
Episode 1055 (24th February 1971)
24 Feb 1971
E25
Episode 1064 (29th March 1971)
29 Mar 1971
E26
Episode 1065 (31st March 1971)
31 Mar 1971
E40
Episode 1079 (19th May 1971)
19 May 1971
E51
Episode 1090 (28th June 1971)
28 Jun 1971
E52
Episode 1091 (30th June 1971)
30 Jun 1971
E54
Episode 1093 (7th July 1971)
07 Jul 1971
E104
Episode 1143 (29th December 1971)
29 Dec 1971