Robert Updegraff Books

Weather
Weather

By Imelda Updegraff, Robert Updegraff

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Seas and oceans
Seas and oceans

By Imelda Updegraff

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Relates basic facts about seas and oceans, including currents and waves, tides, sea shore, sea bed, ice cover, and inland seas and salty water.

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Computers Turning Points
Robots Turning Points
Telecommunications Turning Points
Computers Turning Points
A Changing World Turning Points
Water and Weather Turning Points
Mountains and valleys
Mountains and valleys

By Imelda Updegraff

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Describes how mountains and valleys are formed and ways erosion occurs.

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Rivers and lakes
Rivers and lakes

By Imelda Updegraff

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Brief explanations of rivers, drainage basins, erosion, glaciers, and lakes.

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