NASA NTRS · 19690041513
Velocity distribution in the lower mantle.
Abstract
Velocity distribution in lower mantle, showing second major discontinuity in P wave travel time curve at 24 degrees
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Cleary, J. R., Hales, A. L., Roberts, J. L.. 1968-12-01. Velocity distribution in the lower mantle.. https://ntrs.nasa.gov/citations/19690041513
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