A series of four tapes designed to answer bewildering questions about the nature of planet Earth. Each comes with teacher's guide and blackline master.
United Learning, 1560 Sherman Ave., Ste. 100, PO Box 48718, Evanston, IL 60201, Phone: (888)892-3484, Fax: (847)328-6706, Email: email@example.com, URL: http://www.unitedlearning.com, Remarks: A division of Discovery Communications
Available on VHS
Running time 34 minutes.
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