Earthquake!
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Discusses the causes of earthquakes and describes modern techniques for detecting them. Explains primary and secondary waves and the significance of each in detecting earthquakes. Shows the three major layers of the earth--the crust, mantle, and core--and explains their relation to earthquakes and earthquake detection.
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, Discusses the causes of earthquakes and describes modern techniques for detecting them. Explains primary and secondary waves and the significance of each in detecting earthquakes. Shows the three major layers of the earth--the crust, mantle, and core--and explains their relation to earthquakes and earthquake detection.NOTE: Two (or more) records have been merged together to create this data.
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- 16mm Filmography (legacy record) — title, year, creator, length, format, color, sound, description, catalog record
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