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Plate Tectonics Video "...excellent coverage of principal ideas." JOURNAL OF GEOLOGICAL EDUCATION Comprehensive program on the development of the modern theory of an active, restless earth and its interior structure. Traces Wegener's ideas on continental drift to the discoveries of the mid- ocean ridges, paleomagnetism, abyssal trenches, sea-floor spreading, transform faults and the global pattern of shifting tectonic plates. 15 minutes |
| VCT-16 VHS...$69 DVD DVT-30....$70 | |
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