The explorers [videorecording] a century of discovery

An overview of a century's worth of geographical exploration marking the centennial of the National Geographic Society, with segments of Richard E. Byrd, Diane Fossey, Jane Goodall, Jacques Costeau and more.

Manylion Llyfryddiaeth
Awduron Corfforaethol:	National Geographic Society, Washington, D.C, WQED (Television station : Pittsburg, Pa.)
Awduron Eraill:	Kane, Dennis B., Noxon, Nicolas, Skinner, Thomas
Fformat:	Visual Material
Iaith:	English
Cyhoeddwyd:	[Washington, D.C.] The Society c1988.
Cyfres:	National Geographic Society special
Pynciau:	Bell, Alexander Graham. Grosvenor, Gilbert. National Geographic Society. Explorers. Archaeological expeditions. Scientific expeditions. Arctic regions > Discovery and exploration. Polar regions > Discovery and exploration.