BBC Horizon (1964)

T0 111 ep.

T1 9 ep.

T2 24 ep.

T3 23 ep.

T4 23 ep.

T5 24 ep.

T6 37 ep.

T7 37 ep.

T8 32 ep.

T9 33 ep.

T10 32 ep.

T11 33 ep.

T12 26 ep.

T13 30 ep.

T14 23 ep.

T15 24 ep.

T16 25 ep.

T17 25 ep.

T18 27 ep.

T19 22 ep.

T20 24 ep.

T21 22 ep.

T22 16 ep.

T23 22 ep.

T24 22 ep.

T25 25 ep.

T26 20 ep.

T27 20 ep.

T28 23 ep.

T29 19 ep.

T30 21 ep.

T31 21 ep.

T32 20 ep.

T33 16 ep.

T34 15 ep.

T35 18 ep.

T36 14 ep.

T37 19 ep.

T38 11 ep.

T39 18 ep.

T40 19 ep.

T41 18 ep.

T42 20 ep.

T43 19 ep.

T44 9 ep.

T45 17 ep.

T46 18 ep.

T47 14 ep.

T48 15 ep.

T49 13 ep.

T50 16 ep.

T51 11 ep.

T52 18 ep.

T53 16 ep.

T54 15 ep.

T55 13 ep.

T56 6 ep.

T57 8 ep.

T58 4 ep.

T59 4 ep.

T60 1 ep.

T61 4 ep.