Footfall

A giant cylindrical ship is detected in the outer solar system…heading toward Earth. Attempts to communicate with it are not successful. On arrival the ship attacks space based assets and numerous ground installations as a prelude to invasion. Earth is being invaded by what appears to be a heard of creatures that look like elephants. Laser launch, fusion propulsion, and interstellar drive. Earth's consultants...science fiction authors, who else?
Author: 
Larry Niven
Larry Pournelle
Genre: 
Fiction
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0
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Year: 
1985
GoodReads: 
3.87
ISBN-13: 
9780345418425