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Incoming Resources
- Planet earth, produced by WQED/Pittsburgh in association with the National Academy of Science, v. 1,, Fullscreen
- Planet earth, Gifts from the earth ; Fate of the earth, produced by WQED/Pittsburgh in association with the National Academy of Science, v. 3
- Planet earth, Tales from other worlds, produced by WQED/Pittsburgh in association with the National Academy of Science, v. 2