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History Layer by Layer
- 1967 ----- color ----- 23 min ----- 16mm
- Explains how studies of sedimentary fossils relate to general investigation of ocean floor. Shows how sedimentary cores are obtained. Presents investigation leading to new theory of earth's past.
- Topics: (Geology, Oceanography)
![[University of Washington]](http://www.washington.edu/home/graphics/uwsealf6.gif)
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