Helen J Challand
3) Earthquakes
Author
Series
Pub. Date
[1982]
Language
English
Description
Briefly describes the earth's interior, the forces and stresses that sometimes cause the ground to shake, and the effects of such movement.
5) Volcanoes
Author
Series
Pub. Date
[1983]
Language
English
Description
Discusses what causes volcanoes, where they are likely to occur, and how scientists study them.
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