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Sezon 30
Yayınlanma tarihi
Eyl 27, 1989
Season premiere: History of rubber. Includes its cultivation from wild trees.
Season premiere: History of rubber. Includes its cultivation from wild trees.
Yayınlanma tarihi
Eki 04, 1989
A look at the human sense of balance; the Toronto Island Public and Natural Science School.
A look at the human sense of balance; the Toronto Island Public and Natural Science School.
Yayınlanma tarihi
Eki 11, 1989
This episode has no summary.
This episode has no summary.
Yayınlanma tarihi
Eki 25, 1989
This episode has no summary.
This episode has no summary.
Yayınlanma tarihi
Kas 15, 1989
Report on the problems of air traffic at airports in Toronto and Atlanta and about the fixes that require it.
Report on the problems of air traffic at airports in Toronto and Atlanta and about the fixes that require it.
Yayınlanma tarihi
Kas 22, 1989
Researchers struggle to protect a reserve for peregrine falcons; the milkweed plant is part of a complex living network.
Researchers struggle to protect a reserve for peregrine falcons; the milkweed plant is part of a complex living network.
Yayınlanma tarihi
Ara 06, 1989
The conservation of rare breeds of farm animals, and the feeding behaviour of the phalarope, an unusual shorebird.
The conservation of rare breeds of farm animals, and the feeding behaviour of the phalarope, an unusual shorebird.
Yayınlanma tarihi
Ara 13, 1989
Folder on two paper mills in British Columbia that pollute with impunity Howe Sound a few kilometers north of Vancouver.
Folder on two paper mills in British Columbia that pollute with impunity Howe Sound a few kilometers north of Vancouver.
Yayınlanma tarihi
Ara 19, 1989
This episode has no summary.
This episode has no summary.
Yayınlanma tarihi
Ara 26, 1989
To be confirmed
To be confirmed
Yayınlanma tarihi
Oca 03, 1990
The human invests a lot in the war games, such as poker or other more elaborate games. Mathematical analysis of these games allowed
the discovery of elements that could help resolve quickly armed conflict.
The human invests a lot in the war games, such as poker or other more elaborate games. Mathematical analysis of these games allowed
the discovery of elements that could help resolve quickly armed conflict.
Yayınlanma tarihi
Oca 17, 1990
This episode has no summary.
This episode has no summary.
Yayınlanma tarihi
Şub 07, 1990
This episode has no summary.
This episode has no summary.
Yayınlanma tarihi
Şub 21, 1990
This episode has no summary.
This episode has no summary.
Yayınlanma tarihi
Mar 14, 1990
Host David Suzuki and narrator Angela Fusco present this program on the deterioration of paper in old books around the world. At least one-third of the world's books are turning into
.. show full overview
Host David Suzuki and narrator Angela Fusco present this program on the deterioration of paper in old books around the world. At least one-third of the world's books are turning into particles and dust as they become embrittled. This program describes various methods of book preservation, including re-binding, photocopying, de-acidification and creating micro-fiche copies.
Yayınlanma tarihi
Mar 21, 1990
This episode has no summary.
This episode has no summary.
Yayınlanma tarihi
Mar 28, 1990
This episode has no summary.
This episode has no summary.
Yayınlanma tarihi
Haz 20, 1990
The Arctic National Wildlife Refuge, a wilderness against the Canada/U.S. border that is the calving grounds of caribou, is threatened by the U.S. Department of the Interior's plans to develop the land for oil
The Arctic National Wildlife Refuge, a wilderness against the Canada/U.S. border that is the calving grounds of caribou, is threatened by the U.S. Department of the Interior's plans to develop the land for oil
Yayınlanma tarihi
Ağu 01, 1990
The reasons behind the impending extinction of the black rhino are explored
The reasons behind the impending extinction of the black rhino are explored
Yayınlanma tarihi
Eyl 05, 1990
Film clips from three decades reflect changing views of the world.
Film clips from three decades reflect changing views of the world.
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