A documentary series with a broad remit of geography, anthropology and natural history subjects.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | 0 | ||
| Season 1 | December 1967 | December 1967 | 4 |
| Season 2 | January 1968 | December 1968 | 50 |
| Season 3 | January 1969 | December 1969 | 25 |
| Season 4 | January 1970 | December 1970 | 38 |
| Season 5 | January 1971 | December 1971 | 34 |
| Season 6 | March 1971 | November 1972 | 34 |
| Season 7 | February 1973 | November 1973 | 6 |
| Season 8 | February 1974 | December 1974 | 10 |
| Season 9 | January 1975 | December 1975 | 28 |
| Season 10 | January 1976 | December 1976 | 35 |
| Season 11 | January 1977 | December 1977 | 32 |
| Season 12 | January 1978 | December 1978 | 25 |
| Season 13 | January 1979 | December 1979 | 20 |
| Season 14 | January 1980 | December 1980 | 33 |
| Season 15 | January 1981 | December 1981 | 19 |
| Season 16 | January 1982 | December 1982 | 26 |
| Unassigned Episodes | 10 |
| Season | From | To | Episodes |
|---|---|---|---|
| Unassigned Episodes | 429 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 429 |
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